Finding the Fourth Proportional to 116,188.72, 160,334.76 and 65,878

Step by Step Solution

1. Step 1: Write the proportion equation
   116,188.72 : 160,334.76 = 65,878 : x
2. Step 2: Convert to fraction form
   116,188.72/160,334.76 = 65,878/x
3. Step 3: Cross multiply
   116,188.72x = 160,334.76 × 65,878
4. Step 4: Simplify right side
   116,188.72x = 10,562,533,319.28
5. Step 5: Solve for x
   x = 10,562,533,319.28/116,188.72
6. Step 6: Final answer
   x = 90,908.42