Finding the Fourth Proportional to 117,233.78, 161,781.33 and 63,515.59

Step by Step Solution

1. Step 1: Write the proportion equation
   117,233.78 : 161,781.33 = 63,515.59 : x
2. Step 2: Convert to fraction form
   117,233.78/161,781.33 = 63,515.59/x
3. Step 3: Cross multiply
   117,233.78x = 161,781.33 × 63,515.59
4. Step 4: Simplify right side
   117,233.78x = 10,275,636,625.93
5. Step 5: Solve for x
   x = 10,275,636,625.93/117,233.78
6. Step 6: Final answer
   x = 87,650.82