Finding the Fourth Proportional to 76,362.87, 105,386.55 and 42,377.80

Step by Step Solution

1. Step 1: Write the proportion equation
   76,362.87 : 105,386.55 = 42,377.80 : x
2. Step 2: Convert to fraction form
   76,362.87/105,386.55 = 42,377.80/x
3. Step 3: Cross multiply
   76,362.87x = 105,386.55 × 42,377.80
4. Step 4: Simplify right side
   76,362.87x = 4,466,050,138.59
5. Step 5: Solve for x
   x = 4,466,050,138.59/76,362.87
6. Step 6: Final answer
   x = 58,484.58