Finding the Fourth Proportional to 678,061.42, 935,492.41 and 387,464.20

Step by Step Solution

1. Step 1: Write the proportion equation
   678,061.42 : 935,492.41 = 387,464.20 : x
2. Step 2: Convert to fraction form
   678,061.42/935,492.41 = 387,464.20/x
3. Step 3: Cross multiply
   678,061.42x = 935,492.41 × 387,464.20
4. Step 4: Simplify right side
   678,061.42x = 362,469,818,246.72
5. Step 5: Solve for x
   x = 362,469,818,246.72/678,061.42
6. Step 6: Final answer
   x = 534,567.82