Finding the Fourth Proportional to 104,686.74, 144,451.89 and 64,407.06

Step by Step Solution

1. Step 1: Write the proportion equation
   104,686.74 : 144,451.89 = 64,407.06 : x
2. Step 2: Convert to fraction form
   104,686.74/144,451.89 = 64,407.06/x
3. Step 3: Cross multiply
   104,686.74x = 144,451.89 × 64,407.06
4. Step 4: Simplify right side
   104,686.74x = 9,303,721,546.34
5. Step 5: Solve for x
   x = 9,303,721,546.34/104,686.74
6. Step 6: Final answer
   x = 88,872.02