Finding the Fourth Proportional to 156,288,602.77, 234,454,462.15 and 90,740,610.15

Step by Step Solution

1. Step 1: Write the proportion equation
   156,288,602.77 : 234,454,462.15 = 90,740,610.15 : x
2. Step 2: Convert to fraction form
   156,288,602.77/234,454,462.15 = 90,740,610.15/x
3. Step 3: Cross multiply
   156,288,602.77x = 234,454,462.15 × 90,740,610.15
4. Step 4: Simplify right side
   156,288,602.77x = 21,274,540,947,068,092
5. Step 5: Solve for x
   x = 21,274,540,947,068,092/156,288,602.77
6. Step 6: Final answer
   x = 136,123,431.71