Finding the Fourth Proportional to 76,552.81, 105,646.48 and 42,561.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,552.81 : 105,646.48 = 42,561.86 : x
2. Step 2: Convert to fraction form
   76,552.81/105,646.48 = 42,561.86/x
3. Step 3: Cross multiply
   76,552.81x = 105,646.48 × 42,561.86
4. Step 4: Simplify right side
   76,552.81x = 4,496,510,691.25
5. Step 5: Solve for x
   x = 4,496,510,691.25/76,552.81
6. Step 6: Final answer
   x = 58,737.37