Finding the Fourth Proportional to 78,686.98, 108,588.03 and 42,877

Step by Step Solution

1. Step 1: Write the proportion equation
   78,686.98 : 108,588.03 = 42,877 : x
2. Step 2: Convert to fraction form
   78,686.98/108,588.03 = 42,877/x
3. Step 3: Cross multiply
   78,686.98x = 108,588.03 × 42,877
4. Step 4: Simplify right side
   78,686.98x = 4,655,928,962.31
5. Step 5: Solve for x
   x = 4,655,928,962.31/78,686.98
6. Step 6: Final answer
   x = 59,170.26