Finding the Fourth Proportional to 153,973.46, 212,577.31 and 144,443.60

Step by Step Solution

1. Step 1: Write the proportion equation
   153,973.46 : 212,577.31 = 144,443.60 : x
2. Step 2: Convert to fraction form
   153,973.46/212,577.31 = 144,443.60/x
3. Step 3: Cross multiply
   153,973.46x = 212,577.31 × 144,443.60
4. Step 4: Simplify right side
   153,973.46x = 30,705,433,045.30
5. Step 5: Solve for x
   x = 30,705,433,045.30/153,973.46
6. Step 6: Final answer
   x = 199,420.30