Finding the Fourth Proportional to 118,876.79, 164,049.20 and 65,164.07

Step by Step Solution

1. Step 1: Write the proportion equation
   118,876.79 : 164,049.20 = 65,164.07 : x
2. Step 2: Convert to fraction form
   118,876.79/164,049.20 = 65,164.07/x
3. Step 3: Cross multiply
   118,876.79x = 164,049.20 × 65,164.07
4. Step 4: Simplify right side
   118,876.79x = 10,690,113,880.91
5. Step 5: Solve for x
   x = 10,690,113,880.91/118,876.79
6. Step 6: Final answer
   x = 89,926.00