Finding the Fourth Proportional to 117,980, 162,813.83 and 64,265.46

Step by Step Solution

1. Step 1: Write the proportion equation
   117,980 : 162,813.83 = 64,265.46 : x
2. Step 2: Convert to fraction form
   117,980/162,813.83 = 64,265.46/x
3. Step 3: Cross multiply
   117,980x = 162,813.83 × 64,265.46
4. Step 4: Simplify right side
   117,980x = 10,463,305,679.31
5. Step 5: Solve for x
   x = 10,463,305,679.31/117,980
6. Step 6: Final answer
   x = 88,687.11