Finding the Fourth Proportional to 142,250.22, 213,386.22 and 42,402.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,250.22 : 213,386.22 = 42,402.78 : x
2. Step 2: Convert to fraction form
   142,250.22/213,386.22 = 42,402.78/x
3. Step 3: Cross multiply
   142,250.22x = 213,386.22 × 42,402.78
4. Step 4: Simplify right side
   142,250.22x = 9,048,168,941.69
5. Step 5: Solve for x
   x = 9,048,168,941.69/142,250.22
6. Step 6: Final answer
   x = 63,607.42