Finding the Fourth Proportional to 117,510.54, 162,190.14 and 72,212.30

Step by Step Solution

1. Step 1: Write the proportion equation
   117,510.54 : 162,190.14 = 72,212.30 : x
2. Step 2: Convert to fraction form
   117,510.54/162,190.14 = 72,212.30/x
3. Step 3: Cross multiply
   117,510.54x = 162,190.14 × 72,212.30
4. Step 4: Simplify right side
   117,510.54x = 11,712,123,046.72
5. Step 5: Solve for x
   x = 11,712,123,046.72/117,510.54
6. Step 6: Final answer
   x = 99,668.70