Finding the Fourth Proportional to 117,603.72, 162,293.40 and 63,888.30

Step by Step Solution

1. Step 1: Write the proportion equation
   117,603.72 : 162,293.40 = 63,888.30 : x
2. Step 2: Convert to fraction form
   117,603.72/162,293.40 = 63,888.30/x
3. Step 3: Cross multiply
   117,603.72x = 162,293.40 × 63,888.30
4. Step 4: Simplify right side
   117,603.72x = 10,368,649,427.22
5. Step 5: Solve for x
   x = 10,368,649,427.22/117,603.72
6. Step 6: Final answer
   x = 88,166.00