Finding the Fourth Proportional to 118,781.68, 163,911.72 and 65,056

Step by Step Solution

1. Step 1: Write the proportion equation
   118,781.68 : 163,911.72 = 65,056 : x
2. Step 2: Convert to fraction form
   118,781.68/163,911.72 = 65,056/x
3. Step 3: Cross multiply
   118,781.68x = 163,911.72 × 65,056
4. Step 4: Simplify right side
   118,781.68x = 10,663,440,856.32
5. Step 5: Solve for x
   x = 10,663,440,856.32/118,781.68
6. Step 6: Final answer
   x = 89,773.45