Finding the Fourth Proportional to 78,562.64, 108,414.60 and 42,752.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,562.64 : 108,414.60 = 42,752.72 : x
2. Step 2: Convert to fraction form
   78,562.64/108,414.60 = 42,752.72/x
3. Step 3: Cross multiply
   78,562.64x = 108,414.60 × 42,752.72
4. Step 4: Simplify right side
   78,562.64x = 4,635,019,037.71
5. Step 5: Solve for x
   x = 4,635,019,037.71/78,562.64
6. Step 6: Final answer
   x = 58,997.75