Finding the Fourth Proportional to 72,389.77, 108,089.53 and 64,844.62

Step by Step Solution

1. Step 1: Write the proportion equation
   72,389.77 : 108,089.53 = 64,844.62 : x
2. Step 2: Convert to fraction form
   72,389.77/108,089.53 = 64,844.62/x
3. Step 3: Cross multiply
   72,389.77x = 108,089.53 × 64,844.62
4. Step 4: Simplify right side
   72,389.77x = 7,009,024,498.83
5. Step 5: Solve for x
   x = 7,009,024,498.83/72,389.77
6. Step 6: Final answer
   x = 96,823.41