Finding the Fourth Proportional to 143,173.98, 197,625.42 and 100,856.34

Step by Step Solution

1. Step 1: Write the proportion equation
   143,173.98 : 197,625.42 = 100,856.34 : x
2. Step 2: Convert to fraction form
   143,173.98/197,625.42 = 100,856.34/x
3. Step 3: Cross multiply
   143,173.98x = 197,625.42 × 100,856.34
4. Step 4: Simplify right side
   143,173.98x = 19,931,776,552.16
5. Step 5: Solve for x
   x = 19,931,776,552.16/143,173.98
6. Step 6: Final answer
   x = 139,213.68