Finding the Fourth Proportional to 117,499.72, 162,109.56 and 75,082.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,499.72 : 162,109.56 = 75,082.72 : x
2. Step 2: Convert to fraction form
   117,499.72/162,109.56 = 75,082.72/x
3. Step 3: Cross multiply
   117,499.72x = 162,109.56 × 75,082.72
4. Step 4: Simplify right side
   117,499.72x = 12,171,626,702.80
5. Step 5: Solve for x
   x = 12,171,626,702.80/117,499.72
6. Step 6: Final answer
   x = 103,588.56