Finding the Fourth Proportional to 76,663.50, 105,799.11 and 42,674.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,663.50 : 105,799.11 = 42,674.15 : x
2. Step 2: Convert to fraction form
   76,663.50/105,799.11 = 42,674.15/x
3. Step 3: Cross multiply
   76,663.50x = 105,799.11 × 42,674.15
4. Step 4: Simplify right side
   76,663.50x = 4,514,887,472.86
5. Step 5: Solve for x
   x = 4,514,887,472.86/76,663.50
6. Step 6: Final answer
   x = 58,892.27