Finding the Fourth Proportional to 342,294.83, 472,209.71 and 221,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,294.83 : 472,209.71 = 221,475.50 : x
2. Step 2: Convert to fraction form
   342,294.83/472,209.71 = 221,475.50/x
3. Step 3: Cross multiply
   342,294.83x = 472,209.71 × 221,475.50
4. Step 4: Simplify right side
   342,294.83x = 104,582,878,158.68
5. Step 5: Solve for x
   x = 104,582,878,158.68/342,294.83
6. Step 6: Final answer
   x = 305,534.50