Finding the Fourth Proportional to 117,874.56, 176,693.76 and 42,931.20

Step by Step Solution

1. Step 1: Write the proportion equation
   117,874.56 : 176,693.76 = 42,931.20 : x
2. Step 2: Convert to fraction form
   117,874.56/176,693.76 = 42,931.20/x
3. Step 3: Cross multiply
   117,874.56x = 176,693.76 × 42,931.20
4. Step 4: Simplify right side
   117,874.56x = 7,585,675,149.31
5. Step 5: Solve for x
   x = 7,585,675,149.31/117,874.56
6. Step 6: Final answer
   x = 64,353.79