Finding the Fourth Proportional to 140,526.71, 193,990.18 and 89,607.88

Step by Step Solution

1. Step 1: Write the proportion equation
   140,526.71 : 193,990.18 = 89,607.88 : x
2. Step 2: Convert to fraction form
   140,526.71/193,990.18 = 89,607.88/x
3. Step 3: Cross multiply
   140,526.71x = 193,990.18 × 89,607.88
4. Step 4: Simplify right side
   140,526.71x = 17,383,047,800.67
5. Step 5: Solve for x
   x = 17,383,047,800.67/140,526.71
6. Step 6: Final answer
   x = 123,699.25