Finding the Fourth Proportional to 680,055,494.58, 1,020,088,956.15 and 188,807,069.34

Step by Step Solution

1. Step 1: Write the proportion equation
   680,055,494.58 : 1,020,088,956.15 = 188,807,069.34 : x
2. Step 2: Convert to fraction form
   680,055,494.58/1,020,088,956.15 = 188,807,069.34/x
3. Step 3: Cross multiply
   680,055,494.58x = 1,020,088,956.15 × 188,807,069.34
4. Step 4: Simplify right side
   680,055,494.58x = 192,600,006,276,781,280
5. Step 5: Solve for x
   x = 192,600,006,276,781,280/680,055,494.58
6. Step 6: Final answer
   x = 283,212,190.49