Finding the Fourth Proportional to 76,808.58, 105,996.28 and 42,819.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,808.58 : 105,996.28 = 42,819.22 : x
2. Step 2: Convert to fraction form
   76,808.58/105,996.28 = 42,819.22/x
3. Step 3: Cross multiply
   76,808.58x = 105,996.28 × 42,819.22
4. Step 4: Simplify right side
   76,808.58x = 4,538,678,032.50
5. Step 5: Solve for x
   x = 4,538,678,032.50/76,808.58
6. Step 6: Final answer
   x = 59,090.77