Finding the Fourth Proportional to 83,486.17, 115,222.72 and 51,665.32

Step by Step Solution

1. Step 1: Write the proportion equation
   83,486.17 : 115,222.72 = 51,665.32 : x
2. Step 2: Convert to fraction form
   83,486.17/115,222.72 = 51,665.32/x
3. Step 3: Cross multiply
   83,486.17x = 115,222.72 × 51,665.32
4. Step 4: Simplify right side
   83,486.17x = 5,953,018,123.96
5. Step 5: Solve for x
   x = 5,953,018,123.96/83,486.17
6. Step 6: Final answer
   x = 71,305.44