Finding the Fourth Proportional to 76,305.53, 105,299.75 and 42,314.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,305.53 : 105,299.75 = 42,314.15 : x
2. Step 2: Convert to fraction form
   76,305.53/105,299.75 = 42,314.15/x
3. Step 3: Cross multiply
   76,305.53x = 105,299.75 × 42,314.15
4. Step 4: Simplify right side
   76,305.53x = 4,455,669,204.89
5. Step 5: Solve for x
   x = 4,455,669,204.89/76,305.53
6. Step 6: Final answer
   x = 58,392.48