Finding the Fourth Proportional to 55,321.29, 83,018.84 and 28,691.83

Step by Step Solution

1. Step 1: Write the proportion equation
   55,321.29 : 83,018.84 = 28,691.83 : x
2. Step 2: Convert to fraction form
   55,321.29/83,018.84 = 28,691.83/x
3. Step 3: Cross multiply
   55,321.29x = 83,018.84 × 28,691.83
4. Step 4: Simplify right side
   55,321.29x = 2,381,962,619.58
5. Step 5: Solve for x
   x = 2,381,962,619.58/55,321.29
6. Step 6: Final answer
   x = 43,056.89