Finding the Fourth Proportional to 51,091.33, 70,505.16 and 28,429.68

Step by Step Solution

1. Step 1: Write the proportion equation
   51,091.33 : 70,505.16 = 28,429.68 : x
2. Step 2: Convert to fraction form
   51,091.33/70,505.16 = 28,429.68/x
3. Step 3: Cross multiply
   51,091.33x = 70,505.16 × 28,429.68
4. Step 4: Simplify right side
   51,091.33x = 2,004,439,374.89
5. Step 5: Solve for x
   x = 2,004,439,374.89/51,091.33
6. Step 6: Final answer
   x = 39,232.47