Finding the Fourth Proportional to 141,915.16, 195,856.06 and 81,493.72

Step by Step Solution

1. Step 1: Write the proportion equation
   141,915.16 : 195,856.06 = 81,493.72 : x
2. Step 2: Convert to fraction form
   141,915.16/195,856.06 = 81,493.72/x
3. Step 3: Cross multiply
   141,915.16x = 195,856.06 × 81,493.72
4. Step 4: Simplify right side
   141,915.16x = 15,961,038,913.94
5. Step 5: Solve for x
   x = 15,961,038,913.94/141,915.16
6. Step 6: Final answer
   x = 112,468.88