Finding the Fourth Proportional to 76,300.70, 105,296.22 and 42,310.62

Step by Step Solution

1. Step 1: Write the proportion equation
   76,300.70 : 105,296.22 = 42,310.62 : x
2. Step 2: Convert to fraction form
   76,300.70/105,296.22 = 42,310.62/x
3. Step 3: Cross multiply
   76,300.70x = 105,296.22 × 42,310.62
4. Step 4: Simplify right side
   76,300.70x = 4,455,148,351.86
5. Step 5: Solve for x
   x = 4,455,148,351.86/76,300.70
6. Step 6: Final answer
   x = 58,389.35