Finding the Fourth Proportional to 78,563.64, 108,415.98 and 42,753.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,563.64 : 108,415.98 = 42,753.72 : x
2. Step 2: Convert to fraction form
   78,563.64/108,415.98 = 42,753.72/x
3. Step 3: Cross multiply
   78,563.64x = 108,415.98 × 42,753.72
4. Step 4: Simplify right side
   78,563.64x = 4,635,186,452.45
5. Step 5: Solve for x
   x = 4,635,186,452.45/78,563.64
6. Step 6: Final answer
   x = 58,999.13