Finding the Fourth Proportional to 76,310.39, 105,311.73 and 42,316.59

Step by Step Solution

1. Step 1: Write the proportion equation
   76,310.39 : 105,311.73 = 42,316.59 : x
2. Step 2: Convert to fraction form
   76,310.39/105,311.73 = 42,316.59/x
3. Step 3: Cross multiply
   76,310.39x = 105,311.73 × 42,316.59
4. Step 4: Simplify right side
   76,310.39x = 4,456,433,300.60
5. Step 5: Solve for x
   x = 4,456,433,300.60/76,310.39
6. Step 6: Final answer
   x = 58,398.78