Finding the Fourth Proportional to 76,404.96, 105,444 and 42,417.36

Step by Step Solution

1. Step 1: Write the proportion equation
   76,404.96 : 105,444 = 42,417.36 : x
2. Step 2: Convert to fraction form
   76,404.96/105,444 = 42,417.36/x
3. Step 3: Cross multiply
   76,404.96x = 105,444 × 42,417.36
4. Step 4: Simplify right side
   76,404.96x = 4,472,656,107.84
5. Step 5: Solve for x
   x = 4,472,656,107.84/76,404.96
6. Step 6: Final answer
   x = 58,538.82