Finding the Fourth Proportional to 72,649.23, 108,907.83 and 64,776.03

Step by Step Solution

1. Step 1: Write the proportion equation
   72,649.23 : 108,907.83 = 64,776.03 : x
2. Step 2: Convert to fraction form
   72,649.23/108,907.83 = 64,776.03/x
3. Step 3: Cross multiply
   72,649.23x = 108,907.83 × 64,776.03
4. Step 4: Simplify right side
   72,649.23x = 7,054,616,863.31
5. Step 5: Solve for x
   x = 7,054,616,863.31/72,649.23
6. Step 6: Final answer
   x = 97,105.18