Finding the Fourth Proportional to 76,549.57, 105,642.00 and 42,558.61

Step by Step Solution

1. Step 1: Write the proportion equation
   76,549.57 : 105,642.00 = 42,558.61 : x
2. Step 2: Convert to fraction form
   76,549.57/105,642.00 = 42,558.61/x
3. Step 3: Cross multiply
   76,549.57x = 105,642.00 × 42,558.61
4. Step 4: Simplify right side
   76,549.57x = 4,495,976,464.83
5. Step 5: Solve for x
   x = 4,495,976,464.83/76,549.57
6. Step 6: Final answer
   x = 58,732.88