Finding the Fourth Proportional to 78,560.30, 108,415.50 and 42,752.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,560.30 : 108,415.50 = 42,752.62 : x
2. Step 2: Convert to fraction form
   78,560.30/108,415.50 = 42,752.62/x
3. Step 3: Cross multiply
   78,560.30x = 108,415.50 × 42,752.62
4. Step 4: Simplify right side
   78,560.30x = 4,635,046,944.65
5. Step 5: Solve for x
   x = 4,635,046,944.65/78,560.30
6. Step 6: Final answer
   x = 58,999.86