Finding the Fourth Proportional to 123,725.34, 170,741.34 and 75,978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   123,725.34 : 170,741.34 = 75,978.18 : x
2. Step 2: Convert to fraction form
   123,725.34/170,741.34 = 75,978.18/x
3. Step 3: Cross multiply
   123,725.34x = 170,741.34 × 75,978.18
4. Step 4: Simplify right side
   123,725.34x = 12,972,616,263.96
5. Step 5: Solve for x
   x = 12,972,616,263.96/123,725.34
6. Step 6: Final answer
   x = 104,850.12