Finding the Fourth Proportional to 83,688, 115,490.25 and 45,963.06

Step by Step Solution

1. Step 1: Write the proportion equation
   83,688 : 115,490.25 = 45,963.06 : x
2. Step 2: Convert to fraction form
   83,688/115,490.25 = 45,963.06/x
3. Step 3: Cross multiply
   83,688x = 115,490.25 × 45,963.06
4. Step 4: Simplify right side
   83,688x = 5,308,285,290.17
5. Step 5: Solve for x
   x = 5,308,285,290.17/83,688
6. Step 6: Final answer
   x = 63,429.47