Finding the Fourth Proportional to 64,434.56, 88,947.59 and 60,399.54

Step by Step Solution

1. Step 1: Write the proportion equation
   64,434.56 : 88,947.59 = 60,399.54 : x
2. Step 2: Convert to fraction form
   64,434.56/88,947.59 = 60,399.54/x
3. Step 3: Cross multiply
   64,434.56x = 88,947.59 × 60,399.54
4. Step 4: Simplify right side
   64,434.56x = 5,372,393,218.11
5. Step 5: Solve for x
   x = 5,372,393,218.11/64,434.56
6. Step 6: Final answer
   x = 83,377.52