Finding the Fourth Proportional to 116,618.08, 160,916.34 and 65,623.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,618.08 : 160,916.34 = 65,623.72 : x
2. Step 2: Convert to fraction form
   116,618.08/160,916.34 = 65,623.72/x
3. Step 3: Cross multiply
   116,618.08x = 160,916.34 × 65,623.72
4. Step 4: Simplify right side
   116,618.08x = 10,559,928,839.58
5. Step 5: Solve for x
   x = 10,559,928,839.58/116,618.08
6. Step 6: Final answer
   x = 90,551.39