Finding the Fourth Proportional to 142,085.28, 213,127.86 and 42,245.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,085.28 : 213,127.86 = 42,245.04 : x
2. Step 2: Convert to fraction form
   142,085.28/213,127.86 = 42,245.04/x
3. Step 3: Cross multiply
   142,085.28x = 213,127.86 × 42,245.04
4. Step 4: Simplify right side
   142,085.28x = 9,003,594,970.81
5. Step 5: Solve for x
   x = 9,003,594,970.81/142,085.28
6. Step 6: Final answer
   x = 63,367.54