Finding the Fourth Proportional to 76,553.88, 105,642.24 and 42,561.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,553.88 : 105,642.24 = 42,561.48 : x
2. Step 2: Convert to fraction form
   76,553.88/105,642.24 = 42,561.48/x
3. Step 3: Cross multiply
   76,553.88x = 105,642.24 × 42,561.48
4. Step 4: Simplify right side
   76,553.88x = 4,496,290,084.92
5. Step 5: Solve for x
   x = 4,496,290,084.92/76,553.88
6. Step 6: Final answer
   x = 58,733.67