Finding the Fourth Proportional to 52,792.32, 72,853.42 and 28,919.85

Step by Step Solution

1. Step 1: Write the proportion equation
   52,792.32 : 72,853.42 = 28,919.85 : x
2. Step 2: Convert to fraction form
   52,792.32/72,853.42 = 28,919.85/x
3. Step 3: Cross multiply
   52,792.32x = 72,853.42 × 28,919.85
4. Step 4: Simplify right side
   52,792.32x = 2,106,909,978.39
5. Step 5: Solve for x
   x = 2,106,909,978.39/52,792.32
6. Step 6: Final answer
   x = 39,909.40