Finding the Fourth Proportional to 76,300.62, 105,296.11 and 42,310.54

Step by Step Solution

1. Step 1: Write the proportion equation
   76,300.62 : 105,296.11 = 42,310.54 : x
2. Step 2: Convert to fraction form
   76,300.62/105,296.11 = 42,310.54/x
3. Step 3: Cross multiply
   76,300.62x = 105,296.11 × 42,310.54
4. Step 4: Simplify right side
   76,300.62x = 4,455,134,747.52
5. Step 5: Solve for x
   x = 4,455,134,747.52/76,300.62
6. Step 6: Final answer
   x = 58,389.24