Finding the Fourth Proportional to 108,063.27, 148,948.86 and 72,240.21

Step by Step Solution

1. Step 1: Write the proportion equation
   108,063.27 : 148,948.86 = 72,240.21 : x
2. Step 2: Convert to fraction form
   108,063.27/148,948.86 = 72,240.21/x
3. Step 3: Cross multiply
   108,063.27x = 148,948.86 × 72,240.21
4. Step 4: Simplify right side
   108,063.27x = 10,760,096,925.66
5. Step 5: Solve for x
   x = 10,760,096,925.66/108,063.27
6. Step 6: Final answer
   x = 99,572.19