Finding the Fourth Proportional to 55,411.32, 82,763.40 and 50,138.22

Step by Step Solution

1. Step 1: Write the proportion equation
   55,411.32 : 82,763.40 = 50,138.22 : x
2. Step 2: Convert to fraction form
   55,411.32/82,763.40 = 50,138.22/x
3. Step 3: Cross multiply
   55,411.32x = 82,763.40 × 50,138.22
4. Step 4: Simplify right side
   55,411.32x = 4,149,609,557.15
5. Step 5: Solve for x
   x = 4,149,609,557.15/55,411.32
6. Step 6: Final answer
   x = 74,887.40