Finding the Fourth Proportional to 90,610.61, 124,999.25 and 63,768.02

Step by Step Solution

1. Step 1: Write the proportion equation
   90,610.61 : 124,999.25 = 63,768.02 : x
2. Step 2: Convert to fraction form
   90,610.61/124,999.25 = 63,768.02/x
3. Step 3: Cross multiply
   90,610.61x = 124,999.25 × 63,768.02
4. Step 4: Simplify right side
   90,610.61x = 7,970,953,730.15
5. Step 5: Solve for x
   x = 7,970,953,730.15/90,610.61
6. Step 6: Final answer
   x = 87,969.32