Finding the Fourth Proportional to 117,020.71, 161,488.38 and 63,305.56

Step by Step Solution

1. Step 1: Write the proportion equation
   117,020.71 : 161,488.38 = 63,305.56 : x
2. Step 2: Convert to fraction form
   117,020.71/161,488.38 = 63,305.56/x
3. Step 3: Cross multiply
   117,020.71x = 161,488.38 × 63,305.56
4. Step 4: Simplify right side
   117,020.71x = 10,223,112,329.39
5. Step 5: Solve for x
   x = 10,223,112,329.39/117,020.71
6. Step 6: Final answer
   x = 87,361.56