Finding the Fourth Proportional to 463,051.05, 638,807.70 and 271,978.32

Step by Step Solution

1. Step 1: Write the proportion equation
   463,051.05 : 638,807.70 = 271,978.32 : x
2. Step 2: Convert to fraction form
   463,051.05/638,807.70 = 271,978.32/x
3. Step 3: Cross multiply
   463,051.05x = 638,807.70 × 271,978.32
4. Step 4: Simplify right side
   463,051.05x = 173,741,845,049.06
5. Step 5: Solve for x
   x = 173,741,845,049.06/463,051.05
6. Step 6: Final answer
   x = 375,210.99