Finding the Fourth Proportional to 116,851.32, 161,387.82 and 78,544.35

Step by Step Solution

1. Step 1: Write the proportion equation
   116,851.32 : 161,387.82 = 78,544.35 : x
2. Step 2: Convert to fraction form
   116,851.32/161,387.82 = 78,544.35/x
3. Step 3: Cross multiply
   116,851.32x = 161,387.82 × 78,544.35
4. Step 4: Simplify right side
   116,851.32x = 12,676,101,419.82
5. Step 5: Solve for x
   x = 12,676,101,419.82/116,851.32
6. Step 6: Final answer
   x = 108,480.60