Finding the Fourth Proportional to 116,258.21, 160,439.27 and 65,274.91

Step by Step Solution

1. Step 1: Write the proportion equation
   116,258.21 : 160,439.27 = 65,274.91 : x
2. Step 2: Convert to fraction form
   116,258.21/160,439.27 = 65,274.91/x
3. Step 3: Cross multiply
   116,258.21x = 160,439.27 × 65,274.91
4. Step 4: Simplify right side
   116,258.21x = 10,472,658,909.72
5. Step 5: Solve for x
   x = 10,472,658,909.72/116,258.21
6. Step 6: Final answer
   x = 90,081.03