Finding the Fourth Proportional to 151,648.91, 209,279.51 and 83,666.78

Step by Step Solution

1. Step 1: Write the proportion equation
   151,648.91 : 209,279.51 = 83,666.78 : x
2. Step 2: Convert to fraction form
   151,648.91/209,279.51 = 83,666.78/x
3. Step 3: Cross multiply
   151,648.91x = 209,279.51 × 83,666.78
4. Step 4: Simplify right side
   151,648.91x = 17,509,741,256.95
5. Step 5: Solve for x
   x = 17,509,741,256.95/151,648.91
6. Step 6: Final answer
   x = 115,462.36