Finding the Fourth Proportional to 90,040.64, 124,124.28 and 63,101.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,040.64 : 124,124.28 = 63,101.72 : x
2. Step 2: Convert to fraction form
   90,040.64/124,124.28 = 63,101.72/x
3. Step 3: Cross multiply
   90,040.64x = 124,124.28 × 63,101.72
4. Step 4: Simplify right side
   90,040.64x = 7,832,455,561.76
5. Step 5: Solve for x
   x = 7,832,455,561.76/90,040.64
6. Step 6: Final answer
   x = 86,988.00