Finding the Fourth Proportional to 118,747.29, 163,871.49 and 64,300.05

Step by Step Solution

1. Step 1: Write the proportion equation
   118,747.29 : 163,871.49 = 64,300.05 : x
2. Step 2: Convert to fraction form
   118,747.29/163,871.49 = 64,300.05/x
3. Step 3: Cross multiply
   118,747.29x = 163,871.49 × 64,300.05
4. Step 4: Simplify right side
   118,747.29x = 10,536,945,000.57
5. Step 5: Solve for x
   x = 10,536,945,000.57/118,747.29
6. Step 6: Final answer
   x = 88,734.19