Finding the Fourth Proportional to 118,112.85, 162,996.47 and 64,398.77

Step by Step Solution

1. Step 1: Write the proportion equation
   118,112.85 : 162,996.47 = 64,398.77 : x
2. Step 2: Convert to fraction form
   118,112.85/162,996.47 = 64,398.77/x
3. Step 3: Cross multiply
   118,112.85x = 162,996.47 × 64,398.77
4. Step 4: Simplify right side
   118,112.85x = 10,496,771,045.37
5. Step 5: Solve for x
   x = 10,496,771,045.37/118,112.85
6. Step 6: Final answer
   x = 88,870.69