Finding the Fourth Proportional to 116,003.10, 173,615.85 and 81,011.10

Step by Step Solution

1. Step 1: Write the proportion equation
   116,003.10 : 173,615.85 = 81,011.10 : x
2. Step 2: Convert to fraction form
   116,003.10/173,615.85 = 81,011.10/x
3. Step 3: Cross multiply
   116,003.10x = 173,615.85 × 81,011.10
4. Step 4: Simplify right side
   116,003.10x = 14,064,810,985.94
5. Step 5: Solve for x
   x = 14,064,810,985.94/116,003.10
6. Step 6: Final answer
   x = 121,245.13