Finding the Fourth Proportional to 89,862.06, 123,962.72 and 72,886.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,862.06 : 123,962.72 = 72,886.08 : x
2. Step 2: Convert to fraction form
   89,862.06/123,962.72 = 72,886.08/x
3. Step 3: Cross multiply
   89,862.06x = 123,962.72 × 72,886.08
4. Step 4: Simplify right side
   89,862.06x = 9,035,156,726.94
5. Step 5: Solve for x
   x = 9,035,156,726.94/89,862.06
6. Step 6: Final answer
   x = 100,544.73