Finding the Fourth Proportional to 151,939.16, 209,665.24 and 83,955.40

Step by Step Solution

1. Step 1: Write the proportion equation
   151,939.16 : 209,665.24 = 83,955.40 : x
2. Step 2: Convert to fraction form
   151,939.16/209,665.24 = 83,955.40/x
3. Step 3: Cross multiply
   151,939.16x = 209,665.24 × 83,955.40
4. Step 4: Simplify right side
   151,939.16x = 17,602,529,090.30
5. Step 5: Solve for x
   x = 17,602,529,090.30/151,939.16
6. Step 6: Final answer
   x = 115,852.48