Finding the Fourth Proportional to 142,256.86, 213,383.16 and 42,417.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,256.86 : 213,383.16 = 42,417.47 : x
2. Step 2: Convert to fraction form
   142,256.86/213,383.16 = 42,417.47/x
3. Step 3: Cross multiply
   142,256.86x = 213,383.16 × 42,417.47
4. Step 4: Simplify right side
   142,256.86x = 9,051,174,321.26
5. Step 5: Solve for x
   x = 9,051,174,321.26/142,256.86
6. Step 6: Final answer
   x = 63,625.57