Finding the Fourth Proportional to 140,116.12, 210,099.96 and 61,138.12

Step by Step Solution

1. Step 1: Write the proportion equation
   140,116.12 : 210,099.96 = 61,138.12 : x
2. Step 2: Convert to fraction form
   140,116.12/210,099.96 = 61,138.12/x
3. Step 3: Cross multiply
   140,116.12x = 210,099.96 × 61,138.12
4. Step 4: Simplify right side
   140,116.12x = 12,845,116,566.48
5. Step 5: Solve for x
   x = 12,845,116,566.48/140,116.12
6. Step 6: Final answer
   x = 91,674.79