Finding the Fourth Proportional to 142,159.22, 213,234.72 and 36,978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,159.22 : 213,234.72 = 36,978.18 : x
2. Step 2: Convert to fraction form
   142,159.22/213,234.72 = 36,978.18/x
3. Step 3: Cross multiply
   142,159.22x = 213,234.72 × 36,978.18
4. Step 4: Simplify right side
   142,159.22x = 7,885,031,858.41
5. Step 5: Solve for x
   x = 7,885,031,858.41/142,159.22
6. Step 6: Final answer
   x = 55,466.20