Finding the Fourth Proportional to 151,647.88, 209,272.63 and 83,665.40

Step by Step Solution

1. Step 1: Write the proportion equation
   151,647.88 : 209,272.63 = 83,665.40 : x
2. Step 2: Convert to fraction form
   151,647.88/209,272.63 = 83,665.40/x
3. Step 3: Cross multiply
   151,647.88x = 209,272.63 × 83,665.40
4. Step 4: Simplify right side
   151,647.88x = 17,508,878,298.00
5. Step 5: Solve for x
   x = 17,508,878,298.00/151,647.88
6. Step 6: Final answer
   x = 115,457.46