Finding the Fourth Proportional to 50,113.40, 69,140.76 and 28,889.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,113.40 : 69,140.76 = 28,889.72 : x
2. Step 2: Convert to fraction form
   50,113.40/69,140.76 = 28,889.72/x
3. Step 3: Cross multiply
   50,113.40x = 69,140.76 × 28,889.72
4. Step 4: Simplify right side
   50,113.40x = 1,997,457,196.99
5. Step 5: Solve for x
   x = 1,997,457,196.99/50,113.40
6. Step 6: Final answer
   x = 39,858.74