Finding the Fourth Proportional to 104,412.59, 144,089.74 and 56,665.93

Step by Step Solution

1. Step 1: Write the proportion equation
   104,412.59 : 144,089.74 = 56,665.93 : x
2. Step 2: Convert to fraction form
   104,412.59/144,089.74 = 56,665.93/x
3. Step 3: Cross multiply
   104,412.59x = 144,089.74 × 56,665.93
4. Step 4: Simplify right side
   104,412.59x = 8,164,978,782.59
5. Step 5: Solve for x
   x = 8,164,978,782.59/104,412.59
6. Step 6: Final answer
   x = 78,199.18