Finding the Fourth Proportional to 231,061.96, 318,833.96 and 129,074.81

Step by Step Solution

1. Step 1: Write the proportion equation
   231,061.96 : 318,833.96 = 129,074.81 : x
2. Step 2: Convert to fraction form
   231,061.96/318,833.96 = 129,074.81/x
3. Step 3: Cross multiply
   231,061.96x = 318,833.96 × 129,074.81
4. Step 4: Simplify right side
   231,061.96x = 41,153,432,808.55
5. Step 5: Solve for x
   x = 41,153,432,808.55/231,061.96
6. Step 6: Final answer
   x = 178,105.62