Finding the Fourth Proportional to 89,703.56, 123,783.72 and 51,980.24

Step by Step Solution

1. Step 1: Write the proportion equation
   89,703.56 : 123,783.72 = 51,980.24 : x
2. Step 2: Convert to fraction form
   89,703.56/123,783.72 = 51,980.24/x
3. Step 3: Cross multiply
   89,703.56x = 123,783.72 × 51,980.24
4. Step 4: Simplify right side
   89,703.56x = 6,434,307,473.69
5. Step 5: Solve for x
   x = 6,434,307,473.69/89,703.56
6. Step 6: Final answer
   x = 71,728.56