Finding the Fourth Proportional to 117,105.74, 161,606.02 and 63,390.59

Step by Step Solution

1. Step 1: Write the proportion equation
   117,105.74 : 161,606.02 = 63,390.59 : x
2. Step 2: Convert to fraction form
   117,105.74/161,606.02 = 63,390.59/x
3. Step 3: Cross multiply
   117,105.74x = 161,606.02 × 63,390.59
4. Step 4: Simplify right side
   117,105.74x = 10,244,300,955.35
5. Step 5: Solve for x
   x = 10,244,300,955.35/117,105.74
6. Step 6: Final answer
   x = 87,479.07