Finding the Fourth Proportional to 104,158.42, 143,738.67 and 56,411.98

Step by Step Solution

1. Step 1: Write the proportion equation
   104,158.42 : 143,738.67 = 56,411.98 : x
2. Step 2: Convert to fraction form
   104,158.42/143,738.67 = 56,411.98/x
3. Step 3: Cross multiply
   104,158.42x = 143,738.67 × 56,411.98
4. Step 4: Simplify right side
   104,158.42x = 8,108,582,977.27
5. Step 5: Solve for x
   x = 8,108,582,977.27/104,158.42
6. Step 6: Final answer
   x = 77,848.56