Finding the Fourth Proportional to 123,522.93, 170,399.03 and 78,124.45

Step by Step Solution

1. Step 1: Write the proportion equation
   123,522.93 : 170,399.03 = 78,124.45 : x
2. Step 2: Convert to fraction form
   123,522.93/170,399.03 = 78,124.45/x
3. Step 3: Cross multiply
   123,522.93x = 170,399.03 × 78,124.45
4. Step 4: Simplify right side
   123,522.93x = 13,312,330,499.28
5. Step 5: Solve for x
   x = 13,312,330,499.28/123,522.93
6. Step 6: Final answer
   x = 107,772.14