Finding the Fourth Proportional to 663,071.97, 915,061.76 and 372,734.06

Step by Step Solution

1. Step 1: Write the proportion equation
   663,071.97 : 915,061.76 = 372,734.06 : x
2. Step 2: Convert to fraction form
   663,071.97/915,061.76 = 372,734.06/x
3. Step 3: Cross multiply
   663,071.97x = 915,061.76 × 372,734.06
4. Step 4: Simplify right side
   663,071.97x = 341,074,679,914.32
5. Step 5: Solve for x
   x = 341,074,679,914.32/663,071.97
6. Step 6: Final answer
   x = 514,385.61