Finding the Fourth Proportional to 81,211,499.97, 111,947,886.86 and 49,791,379.53

Step by Step Solution

1. Step 1: Write the proportion equation
   81,211,499.97 : 111,947,886.86 = 49,791,379.53 : x
2. Step 2: Convert to fraction form
   81,211,499.97/111,947,886.86 = 49,791,379.53/x
3. Step 3: Cross multiply
   81,211,499.97x = 111,947,886.86 × 49,791,379.53
4. Step 4: Simplify right side
   81,211,499.97x = 5,574,039,722,227,760
5. Step 5: Solve for x
   x = 5,574,039,722,227,760/81,211,499.97
6. Step 6: Final answer
   x = 68,636,088.78