Finding the Fourth Proportional to 749,105.93, 1,123,691.72 and 216,680.78

Step by Step Solution

1. Step 1: Write the proportion equation
   749,105.93 : 1,123,691.72 = 216,680.78 : x
2. Step 2: Convert to fraction form
   749,105.93/1,123,691.72 = 216,680.78/x
3. Step 3: Cross multiply
   749,105.93x = 1,123,691.72 × 216,680.78
4. Step 4: Simplify right side
   749,105.93x = 243,482,400,094.97
5. Step 5: Solve for x
   x = 243,482,400,094.97/749,105.93
6. Step 6: Final answer
   x = 325,030.67