Finding the Fourth Proportional to 104,151.48, 143,728.82 and 56,404.68

Step by Step Solution

1. Step 1: Write the proportion equation
   104,151.48 : 143,728.82 = 56,404.68 : x
2. Step 2: Convert to fraction form
   104,151.48/143,728.82 = 56,404.68/x
3. Step 3: Cross multiply
   104,151.48x = 143,728.82 × 56,404.68
4. Step 4: Simplify right side
   104,151.48x = 8,106,978,098.88
5. Step 5: Solve for x
   x = 8,106,978,098.88/104,151.48
6. Step 6: Final answer
   x = 77,838.34