Finding the Fourth Proportional to 542,088.05, 748,061.33 and 312,654.94

Step by Step Solution

1. Step 1: Write the proportion equation
   542,088.05 : 748,061.33 = 312,654.94 : x
2. Step 2: Convert to fraction form
   542,088.05/748,061.33 = 312,654.94/x
3. Step 3: Cross multiply
   542,088.05x = 748,061.33 × 312,654.94
4. Step 4: Simplify right side
   542,088.05x = 233,885,066,814.04
5. Step 5: Solve for x
   x = 233,885,066,814.04/542,088.05
6. Step 6: Final answer
   x = 431,452.18