Finding the Fourth Proportional to 151,647.72, 209,274.56 and 83,665.52

Step by Step Solution

1. Step 1: Write the proportion equation
   151,647.72 : 209,274.56 = 83,665.52 : x
2. Step 2: Convert to fraction form
   151,647.72/209,274.56 = 83,665.52/x
3. Step 3: Cross multiply
   151,647.72x = 209,274.56 × 83,665.52
4. Step 4: Simplify right side
   151,647.72x = 17,509,064,885.17
5. Step 5: Solve for x
   x = 17,509,064,885.17/151,647.72
6. Step 6: Final answer
   x = 115,458.81