Finding the Fourth Proportional to 55,301.61, 76,318.88 and 31,110.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,301.61 : 76,318.88 = 31,110.15 : x
2. Step 2: Convert to fraction form
   55,301.61/76,318.88 = 31,110.15/x
3. Step 3: Cross multiply
   55,301.61x = 76,318.88 × 31,110.15
4. Step 4: Simplify right side
   55,301.61x = 2,374,291,500.81
5. Step 5: Solve for x
   x = 2,374,291,500.81/55,301.61
6. Step 6: Final answer
   x = 42,933.50