Finding the Fourth Proportional to 115,369.69, 159,210.20 and 63,686.83

Step by Step Solution

1. Step 1: Write the proportion equation
   115,369.69 : 159,210.20 = 63,686.83 : x
2. Step 2: Convert to fraction form
   115,369.69/159,210.20 = 63,686.83/x
3. Step 3: Cross multiply
   115,369.69x = 159,210.20 × 63,686.83
4. Step 4: Simplify right side
   115,369.69x = 10,139,592,941.67
5. Step 5: Solve for x
   x = 10,139,592,941.67/115,369.69
6. Step 6: Final answer
   x = 87,887.84