Finding the Fourth Proportional to 50,499.88, 69,690.18 and 28,145.32

Step by Step Solution

1. Step 1: Write the proportion equation
   50,499.88 : 69,690.18 = 28,145.32 : x
2. Step 2: Convert to fraction form
   50,499.88/69,690.18 = 28,145.32/x
3. Step 3: Cross multiply
   50,499.88x = 69,690.18 × 28,145.32
4. Step 4: Simplify right side
   50,499.88x = 1,961,452,416.96
5. Step 5: Solve for x
   x = 1,961,452,416.96/50,499.88
6. Step 6: Final answer
   x = 38,840.73