Finding the Fourth Proportional to 89,328.54, 123,275.35 and 51,091.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89,328.54 : 123,275.35 = 51,091.62 : x
2. Step 2: Convert to fraction form
   89,328.54/123,275.35 = 51,091.62/x
3. Step 3: Cross multiply
   89,328.54x = 123,275.35 × 51,091.62
4. Step 4: Simplify right side
   89,328.54x = 6,298,337,337.57
5. Step 5: Solve for x
   x = 6,298,337,337.57/89,328.54
6. Step 6: Final answer
   x = 70,507.56