Finding the Fourth Proportional to 76,802.72, 105,993.93 and 42,822.20

Step by Step Solution

1. Step 1: Write the proportion equation
   76,802.72 : 105,993.93 = 42,822.20 : x
2. Step 2: Convert to fraction form
   76,802.72/105,993.93 = 42,822.20/x
3. Step 3: Cross multiply
   76,802.72x = 105,993.93 × 42,822.20
4. Step 4: Simplify right side
   76,802.72x = 4,538,893,269.25
5. Step 5: Solve for x
   x = 4,538,893,269.25/76,802.72
6. Step 6: Final answer
   x = 59,098.08