Finding the Fourth Proportional to 141,472.60, 195,196.86 and 91,111

Step by Step Solution

1. Step 1: Write the proportion equation
   141,472.60 : 195,196.86 = 91,111 : x
2. Step 2: Convert to fraction form
   141,472.60/195,196.86 = 91,111/x
3. Step 3: Cross multiply
   141,472.60x = 195,196.86 × 91,111
4. Step 4: Simplify right side
   141,472.60x = 17,784,581,111.46
5. Step 5: Solve for x
   x = 17,784,581,111.46/141,472.60
6. Step 6: Final answer
   x = 125,710.43