Finding the Fourth Proportional to 219,262.91, 328,915.83 and 91,152.70

Step by Step Solution

1. Step 1: Write the proportion equation
   219,262.91 : 328,915.83 = 91,152.70 : x
2. Step 2: Convert to fraction form
   219,262.91/328,915.83 = 91,152.70/x
3. Step 3: Cross multiply
   219,262.91x = 328,915.83 × 91,152.70
4. Step 4: Simplify right side
   219,262.91x = 29,981,566,388.39
5. Step 5: Solve for x
   x = 29,981,566,388.39/219,262.91
6. Step 6: Final answer
   x = 136,737.98