Finding the Fourth Proportional to 113,988, 157,303.50 and 63,687

Step by Step Solution

1. Step 1: Write the proportion equation
   113,988 : 157,303.50 = 63,687 : x
2. Step 2: Convert to fraction form
   113,988/157,303.50 = 63,687/x
3. Step 3: Cross multiply
   113,988x = 157,303.50 × 63,687
4. Step 4: Simplify right side
   113,988x = 10,018,188,004.50
5. Step 5: Solve for x
   x = 10,018,188,004.50/113,988
6. Step 6: Final answer
   x = 87,888.09