Finding the Fourth Proportional to 76,788.82, 105,969.63 and 42,796.36

Step by Step Solution

1. Step 1: Write the proportion equation
   76,788.82 : 105,969.63 = 42,796.36 : x
2. Step 2: Convert to fraction form
   76,788.82/105,969.63 = 42,796.36/x
3. Step 3: Cross multiply
   76,788.82x = 105,969.63 × 42,796.36
4. Step 4: Simplify right side
   76,788.82x = 4,535,114,434.55
5. Step 5: Solve for x
   x = 4,535,114,434.55/76,788.82
6. Step 6: Final answer
   x = 59,059.57