Finding the Fourth Proportional to 76,147.65, 105,082.92 and 42,156.18

Step by Step Solution

1. Step 1: Write the proportion equation
   76,147.65 : 105,082.92 = 42,156.18 : x
2. Step 2: Convert to fraction form
   76,147.65/105,082.92 = 42,156.18/x
3. Step 3: Cross multiply
   76,147.65x = 105,082.92 × 42,156.18
4. Step 4: Simplify right side
   76,147.65x = 4,429,894,490.45
5. Step 5: Solve for x
   x = 4,429,894,490.45/76,147.65
6. Step 6: Final answer
   x = 58,175.07