Finding the Fourth Proportional to 115,827.67, 159,842.24 and 64,840.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,827.67 : 159,842.24 = 64,840.50 : x
2. Step 2: Convert to fraction form
   115,827.67/159,842.24 = 64,840.50/x
3. Step 3: Cross multiply
   115,827.67x = 159,842.24 × 64,840.50
4. Step 4: Simplify right side
   115,827.67x = 10,364,250,762.72
5. Step 5: Solve for x
   x = 10,364,250,762.72/115,827.67
6. Step 6: Final answer
   x = 89,479.92