Finding the Fourth Proportional to 72,296.34, 108,611.01 and 51,288.54

Step by Step Solution

1. Step 1: Write the proportion equation
   72,296.34 : 108,611.01 = 51,288.54 : x
2. Step 2: Convert to fraction form
   72,296.34/108,611.01 = 51,288.54/x
3. Step 3: Cross multiply
   72,296.34x = 108,611.01 × 51,288.54
4. Step 4: Simplify right side
   72,296.34x = 5,570,500,130.83
5. Step 5: Solve for x
   x = 5,570,500,130.83/72,296.34
6. Step 6: Final answer
   x = 77,050.93