Finding the Fourth Proportional to 118,785.72, 163,924.35 and 65,072.67

Step by Step Solution

1. Step 1: Write the proportion equation
   118,785.72 : 163,924.35 = 65,072.67 : x
2. Step 2: Convert to fraction form
   118,785.72/163,924.35 = 65,072.67/x
3. Step 3: Cross multiply
   118,785.72x = 163,924.35 × 65,072.67
4. Step 4: Simplify right side
   118,785.72x = 10,666,995,132.51
5. Step 5: Solve for x
   x = 10,666,995,132.51/118,785.72
6. Step 6: Final answer
   x = 89,800.32