Finding the Fourth Proportional to 125,062.62, 172,567.82 and 75,978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   125,062.62 : 172,567.82 = 75,978.76 : x
2. Step 2: Convert to fraction form
   125,062.62/172,567.82 = 75,978.76/x
3. Step 3: Cross multiply
   125,062.62x = 172,567.82 × 75,978.76
4. Step 4: Simplify right side
   125,062.62x = 13,111,488,979.50
5. Step 5: Solve for x
   x = 13,111,488,979.50/125,062.62
6. Step 6: Final answer
   x = 104,839.39