Finding the Fourth Proportional to 78,687.09, 108,588.24 and 42,877.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,687.09 : 108,588.24 = 42,877.10 : x
2. Step 2: Convert to fraction form
   78,687.09/108,588.24 = 42,877.10/x
3. Step 3: Cross multiply
   78,687.09x = 108,588.24 × 42,877.10
4. Step 4: Simplify right side
   78,687.09x = 4,655,948,282.36
5. Step 5: Solve for x
   x = 4,655,948,282.36/78,687.09
6. Step 6: Final answer
   x = 59,170.42