Finding the Fourth Proportional to 76,308.25, 105,300.24 and 42,315.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,308.25 : 105,300.24 = 42,315.49 : x
2. Step 2: Convert to fraction form
   76,308.25/105,300.24 = 42,315.49/x
3. Step 3: Cross multiply
   76,308.25x = 105,300.24 × 42,315.49
4. Step 4: Simplify right side
   76,308.25x = 4,455,831,252.72
5. Step 5: Solve for x
   x = 4,455,831,252.72/76,308.25
6. Step 6: Final answer
   x = 58,392.52