Finding the Fourth Proportional to 115,675.31, 159,630.83 and 64,687.46

Step by Step Solution

1. Step 1: Write the proportion equation
   115,675.31 : 159,630.83 = 64,687.46 : x
2. Step 2: Convert to fraction form
   115,675.31/159,630.83 = 64,687.46/x
3. Step 3: Cross multiply
   115,675.31x = 159,630.83 × 64,687.46
4. Step 4: Simplify right side
   115,675.31x = 10,326,111,808.80
5. Step 5: Solve for x
   x = 10,326,111,808.80/115,675.31
6. Step 6: Final answer
   x = 89,268.08