Finding the Fourth Proportional to 115,993, 160,070.34 and 65,701.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,993 : 160,070.34 = 65,701.72 : x
2. Step 2: Convert to fraction form
   115,993/160,070.34 = 65,701.72/x
3. Step 3: Cross multiply
   115,993x = 160,070.34 × 65,701.72
4. Step 4: Simplify right side
   115,993x = 10,516,896,658.98
5. Step 5: Solve for x
   x = 10,516,896,658.98/115,993
6. Step 6: Final answer
   x = 90,668.37