Finding the Fourth Proportional to 116,356.05, 160,566.26 and 71,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,356.05 : 160,566.26 = 71,109.72 : x
2. Step 2: Convert to fraction form
   116,356.05/160,566.26 = 71,109.72/x
3. Step 3: Cross multiply
   116,356.05x = 160,566.26 × 71,109.72
4. Step 4: Simplify right side
   116,356.05x = 11,417,821,434.50
5. Step 5: Solve for x
   x = 11,417,821,434.50/116,356.05
6. Step 6: Final answer
   x = 98,128.30