Finding the Fourth Proportional to 680,061.76, 938,485.22 and 374,131.57

Step by Step Solution

1. Step 1: Write the proportion equation
   680,061.76 : 938,485.22 = 374,131.57 : x
2. Step 2: Convert to fraction form
   680,061.76/938,485.22 = 374,131.57/x
3. Step 3: Cross multiply
   680,061.76x = 938,485.22 × 374,131.57
4. Step 4: Simplify right side
   680,061.76x = 351,116,949,715.72
5. Step 5: Solve for x
   x = 351,116,949,715.72/680,061.76
6. Step 6: Final answer
   x = 516,301.56