Finding the Fourth Proportional to 118,770.72, 163,903.66 and 65,056.63

Step by Step Solution

1. Step 1: Write the proportion equation
   118,770.72 : 163,903.66 = 65,056.63 : x
2. Step 2: Convert to fraction form
   118,770.72/163,903.66 = 65,056.63/x
3. Step 3: Cross multiply
   118,770.72x = 163,903.66 × 65,056.63
4. Step 4: Simplify right side
   118,770.72x = 10,663,019,764.27
5. Step 5: Solve for x
   x = 10,663,019,764.27/118,770.72
6. Step 6: Final answer
   x = 89,778.19