Finding the Fourth Proportional to 105,978.66, 158,995.94 and 61,562.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,978.66 : 158,995.94 = 61,562.72 : x
2. Step 2: Convert to fraction form
   105,978.66/158,995.94 = 61,562.72/x
3. Step 3: Cross multiply
   105,978.66x = 158,995.94 × 61,562.72
4. Step 4: Simplify right side
   105,978.66x = 9,788,221,432.56
5. Step 5: Solve for x
   x = 9,788,221,432.56/105,978.66
6. Step 6: Final answer
   x = 92,360.31