Finding the Fourth Proportional to 104,172.84, 143,758.56 and 56,426.04

Step by Step Solution

1. Step 1: Write the proportion equation
   104,172.84 : 143,758.56 = 56,426.04 : x
2. Step 2: Convert to fraction form
   104,172.84/143,758.56 = 56,426.04/x
3. Step 3: Cross multiply
   104,172.84x = 143,758.56 × 56,426.04
4. Step 4: Simplify right side
   104,172.84x = 8,111,726,256.90
5. Step 5: Solve for x
   x = 8,111,726,256.90/104,172.84
6. Step 6: Final answer
   x = 77,867.96