Finding the Fourth Proportional to 76,507.52, 105,573.65 and 42,513.85

Step by Step Solution

1. Step 1: Write the proportion equation
   76,507.52 : 105,573.65 = 42,513.85 : x
2. Step 2: Convert to fraction form
   76,507.52/105,573.65 = 42,513.85/x
3. Step 3: Cross multiply
   76,507.52x = 105,573.65 × 42,513.85
4. Step 4: Simplify right side
   76,507.52x = 4,488,341,949.83
5. Step 5: Solve for x
   x = 4,488,341,949.83/76,507.52
6. Step 6: Final answer
   x = 58,665.37