Finding the Fourth Proportional to 118,432.56, 163,434.94 and 64,716.34

Step by Step Solution

1. Step 1: Write the proportion equation
   118,432.56 : 163,434.94 = 64,716.34 : x
2. Step 2: Convert to fraction form
   118,432.56/163,434.94 = 64,716.34/x
3. Step 3: Cross multiply
   118,432.56x = 163,434.94 × 64,716.34
4. Step 4: Simplify right side
   118,432.56x = 10,576,911,144.92
5. Step 5: Solve for x
   x = 10,576,911,144.92/118,432.56
6. Step 6: Final answer
   x = 89,307.46