Finding the Fourth Proportional to 142,319.02, 213,470.84 and 72,196.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,319.02 : 213,470.84 = 72,196.52 : x
2. Step 2: Convert to fraction form
   142,319.02/213,470.84 = 72,196.52/x
3. Step 3: Cross multiply
   142,319.02x = 213,470.84 × 72,196.52
4. Step 4: Simplify right side
   142,319.02x = 15,411,851,769.48
5. Step 5: Solve for x
   x = 15,411,851,769.48/142,319.02
6. Step 6: Final answer
   x = 108,290.88