Finding the Fourth Proportional to 355,300.04, 532,686.52 and 215,025.32

Step by Step Solution

1. Step 1: Write the proportion equation
   355,300.04 : 532,686.52 = 215,025.32 : x
2. Step 2: Convert to fraction form
   355,300.04/532,686.52 = 215,025.32/x
3. Step 3: Cross multiply
   355,300.04x = 532,686.52 × 215,025.32
4. Step 4: Simplify right side
   355,300.04x = 114,541,089,422.69
5. Step 5: Solve for x
   x = 114,541,089,422.69/355,300.04
6. Step 6: Final answer
   x = 322,378.49