Finding the Fourth Proportional to 78,564.72, 108,419.52 and 42,754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,564.72 : 108,419.52 = 42,754.72 : x
2. Step 2: Convert to fraction form
   78,564.72/108,419.52 = 42,754.72/x
3. Step 3: Cross multiply
   78,564.72x = 108,419.52 × 42,754.72
4. Step 4: Simplify right side
   78,564.72x = 4,635,446,220.13
5. Step 5: Solve for x
   x = 4,635,446,220.13/78,564.72
6. Step 6: Final answer
   x = 59,001.63