Finding the Fourth Proportional to 115,967.93, 160,031.27 and 65,667.05

Step by Step Solution

1. Step 1: Write the proportion equation
   115,967.93 : 160,031.27 = 65,667.05 : x
2. Step 2: Convert to fraction form
   115,967.93/160,031.27 = 65,667.05/x
3. Step 3: Cross multiply
   115,967.93x = 160,031.27 × 65,667.05
4. Step 4: Simplify right side
   115,967.93x = 10,508,781,080.32
5. Step 5: Solve for x
   x = 10,508,781,080.32/115,967.93
6. Step 6: Final answer
   x = 90,617.99