Finding the Fourth Proportional to 76,384.22, 105,411.36 and 42,394.90

Step by Step Solution

1. Step 1: Write the proportion equation
   76,384.22 : 105,411.36 = 42,394.90 : x
2. Step 2: Convert to fraction form
   76,384.22/105,411.36 = 42,394.90/x
3. Step 3: Cross multiply
   76,384.22x = 105,411.36 × 42,394.90
4. Step 4: Simplify right side
   76,384.22x = 4,468,904,066.06
5. Step 5: Solve for x
   x = 4,468,904,066.06/76,384.22
6. Step 6: Final answer
   x = 58,505.59