Finding the Fourth Proportional to 50,109.91, 69,152.13 and 28,889.16

Step by Step Solution

1. Step 1: Write the proportion equation
   50,109.91 : 69,152.13 = 28,889.16 : x
2. Step 2: Convert to fraction form
   50,109.91/69,152.13 = 28,889.16/x
3. Step 3: Cross multiply
   50,109.91x = 69,152.13 × 28,889.16
4. Step 4: Simplify right side
   50,109.91x = 1,997,746,688.59
5. Step 5: Solve for x
   x = 1,997,746,688.59/50,109.91
6. Step 6: Final answer
   x = 39,867.30