Finding the Fourth Proportional to 123,560.00, 170,531.01 and 78,242.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,560.00 : 170,531.01 = 78,242.12 : x
2. Step 2: Convert to fraction form
   123,560.00/170,531.01 = 78,242.12/x
3. Step 3: Cross multiply
   123,560.00x = 170,531.01 × 78,242.12
4. Step 4: Simplify right side
   123,560.00x = 13,342,706,895.49
5. Step 5: Solve for x
   x = 13,342,706,895.49/123,560.00
6. Step 6: Final answer
   x = 107,985.65