Finding the Fourth Proportional to 202,490.50, 279,436.89 and 113,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   202,490.50 : 279,436.89 = 113,066.50 : x
2. Step 2: Convert to fraction form
   202,490.50/279,436.89 = 113,066.50/x
3. Step 3: Cross multiply
   202,490.50x = 279,436.89 × 113,066.50
4. Step 4: Simplify right side
   202,490.50x = 31,594,951,123.19
5. Step 5: Solve for x
   x = 31,594,951,123.19/202,490.50
6. Step 6: Final answer
   x = 156,031.77