Finding the Fourth Proportional to 118,749.72, 163,874.52 and 65,038.08

Step by Step Solution

1. Step 1: Write the proportion equation
   118,749.72 : 163,874.52 = 65,038.08 : x
2. Step 2: Convert to fraction form
   118,749.72/163,874.52 = 65,038.08/x
3. Step 3: Cross multiply
   118,749.72x = 163,874.52 × 65,038.08
4. Step 4: Simplify right side
   118,749.72x = 10,658,084,141.72
5. Step 5: Solve for x
   x = 10,658,084,141.72/118,749.72
6. Step 6: Final answer
   x = 89,752.50