Finding the Fourth Proportional to 137,627.98, 189,965.91 and 81,071.98

Step by Step Solution

1. Step 1: Write the proportion equation
   137,627.98 : 189,965.91 = 81,071.98 : x
2. Step 2: Convert to fraction form
   137,627.98/189,965.91 = 81,071.98/x
3. Step 3: Cross multiply
   137,627.98x = 189,965.91 × 81,071.98
4. Step 4: Simplify right side
   137,627.98x = 15,400,912,456.20
5. Step 5: Solve for x
   x = 15,400,912,456.20/137,627.98
6. Step 6: Final answer
   x = 111,902.48