Finding the Fourth Proportional to 76,293.37, 105,280.63 and 42,299.87

Step by Step Solution

1. Step 1: Write the proportion equation
   76,293.37 : 105,280.63 = 42,299.87 : x
2. Step 2: Convert to fraction form
   76,293.37/105,280.63 = 42,299.87/x
3. Step 3: Cross multiply
   76,293.37x = 105,280.63 × 42,299.87
4. Step 4: Simplify right side
   76,293.37x = 4,453,356,962.52
5. Step 5: Solve for x
   x = 4,453,356,962.52/76,293.37
6. Step 6: Final answer
   x = 58,371.48