Finding the Fourth Proportional to 55,437.12, 76,505.04 and 31,242.24

Step by Step Solution

1. Step 1: Write the proportion equation
   55,437.12 : 76,505.04 = 31,242.24 : x
2. Step 2: Convert to fraction form
   55,437.12/76,505.04 = 31,242.24/x
3. Step 3: Cross multiply
   55,437.12x = 76,505.04 × 31,242.24
4. Step 4: Simplify right side
   55,437.12x = 2,390,188,820.89
5. Step 5: Solve for x
   x = 2,390,188,820.89/55,437.12
6. Step 6: Final answer
   x = 43,115.31