Finding the Fourth Proportional to 78,036.50, 117,072.12 and 30,656.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,036.50 : 117,072.12 = 30,656.18 : x
2. Step 2: Convert to fraction form
   78,036.50/117,072.12 = 30,656.18/x
3. Step 3: Cross multiply
   78,036.50x = 117,072.12 × 30,656.18
4. Step 4: Simplify right side
   78,036.50x = 3,588,983,983.70
5. Step 5: Solve for x
   x = 3,588,983,983.70/78,036.50
6. Step 6: Final answer
   x = 45,991.09