Finding the Fourth Proportional to 238,499.40, 329,123.16 and 129,598.92

Step by Step Solution

1. Step 1: Write the proportion equation
   238,499.40 : 329,123.16 = 129,598.92 : x
2. Step 2: Convert to fraction form
   238,499.40/329,123.16 = 129,598.92/x
3. Step 3: Cross multiply
   238,499.40x = 329,123.16 × 129,598.92
4. Step 4: Simplify right side
   238,499.40x = 42,654,006,082.99
5. Step 5: Solve for x
   x = 42,654,006,082.99/238,499.40
6. Step 6: Final answer
   x = 178,843.24