Finding the Fourth Proportional to 103,686.30, 155,280.34 and 59,178.13

Step by Step Solution

1. Step 1: Write the proportion equation
   103,686.30 : 155,280.34 = 59,178.13 : x
2. Step 2: Convert to fraction form
   103,686.30/155,280.34 = 59,178.13/x
3. Step 3: Cross multiply
   103,686.30x = 155,280.34 × 59,178.13
4. Step 4: Simplify right side
   103,686.30x = 9,189,200,146.96
5. Step 5: Solve for x
   x = 9,189,200,146.96/103,686.30
6. Step 6: Final answer
   x = 88,625.02