Finding the Fourth Proportional to 50,155.90, 69,222.51 and 28,931.02

Step by Step Solution

1. Step 1: Write the proportion equation
   50,155.90 : 69,222.51 = 28,931.02 : x
2. Step 2: Convert to fraction form
   50,155.90/69,222.51 = 28,931.02/x
3. Step 3: Cross multiply
   50,155.90x = 69,222.51 × 28,931.02
4. Step 4: Simplify right side
   50,155.90x = 2,002,677,821.26
5. Step 5: Solve for x
   x = 2,002,677,821.26/50,155.90
6. Step 6: Final answer
   x = 39,929.06