Finding the Fourth Proportional to 55,856.50, 77,081.98 and 31,991.08

Step by Step Solution

1. Step 1: Write the proportion equation
   55,856.50 : 77,081.98 = 31,991.08 : x
2. Step 2: Convert to fraction form
   55,856.50/77,081.98 = 31,991.08/x
3. Step 3: Cross multiply
   55,856.50x = 77,081.98 × 31,991.08
4. Step 4: Simplify right side
   55,856.50x = 2,465,935,788.74
5. Step 5: Solve for x
   x = 2,465,935,788.74/55,856.50
6. Step 6: Final answer
   x = 44,147.70