Finding the Fourth Proportional to 76,477.77, 105,556.23 and 42,498

Step by Step Solution

1. Step 1: Write the proportion equation
   76,477.77 : 105,556.23 = 42,498 : x
2. Step 2: Convert to fraction form
   76,477.77/105,556.23 = 42,498/x
3. Step 3: Cross multiply
   76,477.77x = 105,556.23 × 42,498
4. Step 4: Simplify right side
   76,477.77x = 4,485,928,662.54
5. Step 5: Solve for x
   x = 4,485,928,662.54/76,477.77
6. Step 6: Final answer
   x = 58,656.64