Finding the Fourth Proportional to 140,302.88, 193,681.70 and 89,385.42

Step by Step Solution

1. Step 1: Write the proportion equation
   140,302.88 : 193,681.70 = 89,385.42 : x
2. Step 2: Convert to fraction form
   140,302.88/193,681.70 = 89,385.42/x
3. Step 3: Cross multiply
   140,302.88x = 193,681.70 × 89,385.42
4. Step 4: Simplify right side
   140,302.88x = 17,312,320,100.81
5. Step 5: Solve for x
   x = 17,312,320,100.81/140,302.88
6. Step 6: Final answer
   x = 123,392.48