Finding the Fourth Proportional to 2,071,759,488,019.70, 2,859,908,413,125.60 and 1,290,878,426,330.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071,759,488,019.70 : 2,859,908,413,125.60 = 1,290,878,426,330.10 : x
2. Step 2: Convert to fraction form
   2,071,759,488,019.70/2,859,908,413,125.60 = 1,290,878,426,330.10/x
3. Step 3: Cross multiply
   2,071,759,488,019.70x = 2,859,908,413,125.60 × 1,290,878,426,330.10
4. Step 4: Simplify right side
   2,071,759,488,019.70x = 3,691,794,071,783,788,379,111,424
5. Step 5: Solve for x
   x = 3,691,794,071,783,788,379,111,424/2,071,759,488,019.70
6. Step 6: Final answer
   x = 1,781,960,740,680.67