Finding the Fourth Proportional to 105,659.99, 158,439.81 and 61,300.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,659.99 : 158,439.81 = 61,300.34 : x
2. Step 2: Convert to fraction form
   105,659.99/158,439.81 = 61,300.34/x
3. Step 3: Cross multiply
   105,659.99x = 158,439.81 × 61,300.34
4. Step 4: Simplify right side
   105,659.99x = 9,712,414,254.36
5. Step 5: Solve for x
   x = 9,712,414,254.36/105,659.99
6. Step 6: Final answer
   x = 91,921.40