Finding the Fourth Proportional to 430,061.31, 645,100.83 and 156,498.15

Step by Step Solution

1. Step 1: Write the proportion equation
   430,061.31 : 645,100.83 = 156,498.15 : x
2. Step 2: Convert to fraction form
   430,061.31/645,100.83 = 156,498.15/x
3. Step 3: Cross multiply
   430,061.31x = 645,100.83 × 156,498.15
4. Step 4: Simplify right side
   430,061.31x = 100,957,086,458.47
5. Step 5: Solve for x
   x = 100,957,086,458.47/430,061.31
6. Step 6: Final answer
   x = 234,750.45