Finding the Fourth Proportional to 118,895.40, 164,070.72 and 71,120.52

Step by Step Solution

1. Step 1: Write the proportion equation
   118,895.40 : 164,070.72 = 71,120.52 : x
2. Step 2: Convert to fraction form
   118,895.40/164,070.72 = 71,120.52/x
3. Step 3: Cross multiply
   118,895.40x = 164,070.72 × 71,120.52
4. Step 4: Simplify right side
   118,895.40x = 11,668,794,923.17
5. Step 5: Solve for x
   x = 11,668,794,923.17/118,895.40
6. Step 6: Final answer
   x = 98,143.37