Finding the Fourth Proportional to 55,111.79, 76,055.15 and 31,237.97

Step by Step Solution

1. Step 1: Write the proportion equation
   55,111.79 : 76,055.15 = 31,237.97 : x
2. Step 2: Convert to fraction form
   55,111.79/76,055.15 = 31,237.97/x
3. Step 3: Cross multiply
   55,111.79x = 76,055.15 × 31,237.97
4. Step 4: Simplify right side
   55,111.79x = 2,375,808,191.86
5. Step 5: Solve for x
   x = 2,375,808,191.86/55,111.79
6. Step 6: Final answer
   x = 43,108.89