Finding the Fourth Proportional to 123,522.86, 170,398.68 and 78,124.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123,522.86 : 170,398.68 = 78,124.52 : x
2. Step 2: Convert to fraction form
   123,522.86/170,398.68 = 78,124.52/x
3. Step 3: Cross multiply
   123,522.86x = 170,398.68 × 78,124.52
4. Step 4: Simplify right side
   123,522.86x = 13,312,315,083.63
5. Step 5: Solve for x
   x = 13,312,315,083.63/123,522.86
6. Step 6: Final answer
   x = 107,772.08