Finding the Fourth Proportional to 83,638.33, 115,417.78 and 45,397.06

Step by Step Solution

1. Step 1: Write the proportion equation
   83,638.33 : 115,417.78 = 45,397.06 : x
2. Step 2: Convert to fraction form
   83,638.33/115,417.78 = 45,397.06/x
3. Step 3: Cross multiply
   83,638.33x = 115,417.78 × 45,397.06
4. Step 4: Simplify right side
   83,638.33x = 5,239,627,481.69
5. Step 5: Solve for x
   x = 5,239,627,481.69/83,638.33
6. Step 6: Final answer
   x = 62,646.25