Finding the Fourth Proportional to 107,415.30, 160,928.55 and 91,863.30

Step by Step Solution

1. Step 1: Write the proportion equation
   107,415.30 : 160,928.55 = 91,863.30 : x
2. Step 2: Convert to fraction form
   107,415.30/160,928.55 = 91,863.30/x
3. Step 3: Cross multiply
   107,415.30x = 160,928.55 × 91,863.30
4. Step 4: Simplify right side
   107,415.30x = 14,783,427,667.22
5. Step 5: Solve for x
   x = 14,783,427,667.22/107,415.30
6. Step 6: Final answer
   x = 137,628.70