Finding the Fourth Proportional to 141,082.56, 194,663.52 and 81,432

Step by Step Solution

1. Step 1: Write the proportion equation
   141,082.56 : 194,663.52 = 81,432 : x
2. Step 2: Convert to fraction form
   141,082.56/194,663.52 = 81,432/x
3. Step 3: Cross multiply
   141,082.56x = 194,663.52 × 81,432
4. Step 4: Simplify right side
   141,082.56x = 15,851,839,760.64
5. Step 5: Solve for x
   x = 15,851,839,760.64/141,082.56
6. Step 6: Final answer
   x = 112,358.61