Finding the Fourth Proportional to 269,870.55, 372,454.17 and 156,693.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,870.55 : 372,454.17 = 156,693.30 : x
2. Step 2: Convert to fraction form
   269,870.55/372,454.17 = 156,693.30/x
3. Step 3: Cross multiply
   269,870.55x = 372,454.17 × 156,693.30
4. Step 4: Simplify right side
   269,870.55x = 58,361,075,035.74
5. Step 5: Solve for x
   x = 58,361,075,035.74/269,870.55
6. Step 6: Final answer
   x = 216,255.81