Finding the Fourth Proportional to 140,555.37, 210,686.17 and 61,603.05

Step by Step Solution

1. Step 1: Write the proportion equation
   140,555.37 : 210,686.17 = 61,603.05 : x
2. Step 2: Convert to fraction form
   140,555.37/210,686.17 = 61,603.05/x
3. Step 3: Cross multiply
   140,555.37x = 210,686.17 × 61,603.05
4. Step 4: Simplify right side
   140,555.37x = 12,978,910,664.82
5. Step 5: Solve for x
   x = 12,978,910,664.82/140,555.37
6. Step 6: Final answer
   x = 92,340.20