Finding the Fourth Proportional to 76,370.55, 105,388.59 and 42,380.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,370.55 : 105,388.59 = 42,380.52 : x
2. Step 2: Convert to fraction form
   76,370.55/105,388.59 = 42,380.52/x
3. Step 3: Cross multiply
   76,370.55x = 105,388.59 × 42,380.52
4. Step 4: Simplify right side
   76,370.55x = 4,466,423,009.99
5. Step 5: Solve for x
   x = 4,466,423,009.99/76,370.55
6. Step 6: Final answer
   x = 58,483.58