Finding the Fourth Proportional to 88,061, 121,443.98 and 74,477.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,061 : 121,443.98 = 74,477.50 : x
2. Step 2: Convert to fraction form
   88,061/121,443.98 = 74,477.50/x
3. Step 3: Cross multiply
   88,061x = 121,443.98 × 74,477.50
4. Step 4: Simplify right side
   88,061x = 9,044,844,020.45
5. Step 5: Solve for x
   x = 9,044,844,020.45/88,061
6. Step 6: Final answer
   x = 102,711.12