Finding the Fourth Proportional to 463,111.60, 639,219.72 and 272,186.32

Step by Step Solution

1. Step 1: Write the proportion equation
   463,111.60 : 639,219.72 = 272,186.32 : x
2. Step 2: Convert to fraction form
   463,111.60/639,219.72 = 272,186.32/x
3. Step 3: Cross multiply
   463,111.60x = 639,219.72 × 272,186.32
4. Step 4: Simplify right side
   463,111.60x = 173,986,863,258.23
5. Step 5: Solve for x
   x = 173,986,863,258.23/463,111.60
6. Step 6: Final answer
   x = 375,691.01