Finding the Fourth Proportional to 78,041.50, 107,670.91 and 50,805.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,041.50 : 107,670.91 = 50,805.15 : x
2. Step 2: Convert to fraction form
   78,041.50/107,670.91 = 50,805.15/x
3. Step 3: Cross multiply
   78,041.50x = 107,670.91 × 50,805.15
4. Step 4: Simplify right side
   78,041.50x = 5,470,236,606.17
5. Step 5: Solve for x
   x = 5,470,236,606.17/78,041.50
6. Step 6: Final answer
   x = 70,093.95