Finding the Fourth Proportional to 659,156.15, 909,659.98 and 372,659.15

Step by Step Solution

1. Step 1: Write the proportion equation
   659,156.15 : 909,659.98 = 372,659.15 : x
2. Step 2: Convert to fraction form
   659,156.15/909,659.98 = 372,659.15/x
3. Step 3: Cross multiply
   659,156.15x = 909,659.98 × 372,659.15
4. Step 4: Simplify right side
   659,156.15x = 338,993,114,935.82
5. Step 5: Solve for x
   x = 338,993,114,935.82/659,156.15
6. Step 6: Final answer
   x = 514,283.47