Finding the Fourth Proportional to 83,646.72, 115,432.96 and 45,921.28

Step by Step Solution

1. Step 1: Write the proportion equation
   83,646.72 : 115,432.96 = 45,921.28 : x
2. Step 2: Convert to fraction form
   83,646.72/115,432.96 = 45,921.28/x
3. Step 3: Cross multiply
   83,646.72x = 115,432.96 × 45,921.28
4. Step 4: Simplify right side
   83,646.72x = 5,300,829,277.39
5. Step 5: Solve for x
   x = 5,300,829,277.39/83,646.72
6. Step 6: Final answer
   x = 63,371.63