Finding the Fourth Proportional to 116,948.78, 161,389.10 and 65,961.35

Step by Step Solution

1. Step 1: Write the proportion equation
   116,948.78 : 161,389.10 = 65,961.35 : x
2. Step 2: Convert to fraction form
   116,948.78/161,389.10 = 65,961.35/x
3. Step 3: Cross multiply
   116,948.78x = 161,389.10 × 65,961.35
4. Step 4: Simplify right side
   116,948.78x = 10,645,442,984.95
5. Step 5: Solve for x
   x = 10,645,442,984.95/116,948.78
6. Step 6: Final answer
   x = 91,026.54