Finding the Fourth Proportional to 140,121, 193,366.98 and 89,820

Step by Step Solution

1. Step 1: Write the proportion equation
   140,121 : 193,366.98 = 89,820 : x
2. Step 2: Convert to fraction form
   140,121/193,366.98 = 89,820/x
3. Step 3: Cross multiply
   140,121x = 193,366.98 × 89,820
4. Step 4: Simplify right side
   140,121x = 17,368,222,143.60
5. Step 5: Solve for x
   x = 17,368,222,143.60/140,121
6. Step 6: Final answer
   x = 123,951.60