Finding the Fourth Proportional to 151,640.43, 209,275.40 and 83,670.52

Step by Step Solution

1. Step 1: Write the proportion equation
   151,640.43 : 209,275.40 = 83,670.52 : x
2. Step 2: Convert to fraction form
   151,640.43/209,275.40 = 83,670.52/x
3. Step 3: Cross multiply
   151,640.43x = 209,275.40 × 83,670.52
4. Step 4: Simplify right side
   151,640.43x = 17,510,181,148.94
5. Step 5: Solve for x
   x = 17,510,181,148.94/151,640.43
6. Step 6: Final answer
   x = 115,471.72