Finding the Fourth Proportional to 76,123.08, 105,047.67 and 42,132.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,123.08 : 105,047.67 = 42,132.96 : x
2. Step 2: Convert to fraction form
   76,123.08/105,047.67 = 42,132.96/x
3. Step 3: Cross multiply
   76,123.08x = 105,047.67 × 42,132.96
4. Step 4: Simplify right side
   76,123.08x = 4,425,969,278.20
5. Step 5: Solve for x
   x = 4,425,969,278.20/76,123.08
6. Step 6: Final answer
   x = 58,142.28