Finding the Fourth Proportional to 84,638.18, 116,738.60 and 60,789.36

Step by Step Solution

1. Step 1: Write the proportion equation
   84,638.18 : 116,738.60 = 60,789.36 : x
2. Step 2: Convert to fraction form
   84,638.18/116,738.60 = 60,789.36/x
3. Step 3: Cross multiply
   84,638.18x = 116,738.60 × 60,789.36
4. Step 4: Simplify right side
   84,638.18x = 7,096,464,781.30
5. Step 5: Solve for x
   x = 7,096,464,781.30/84,638.18
6. Step 6: Final answer
   x = 83,844.72