Finding the Fourth Proportional to 76,395.56, 105,430.02 and 42,860.84

Step by Step Solution

1. Step 1: Write the proportion equation
   76,395.56 : 105,430.02 = 42,860.84 : x
2. Step 2: Convert to fraction form
   76,395.56/105,430.02 = 42,860.84/x
3. Step 3: Cross multiply
   76,395.56x = 105,430.02 × 42,860.84
4. Step 4: Simplify right side
   76,395.56x = 4,518,819,218.42
5. Step 5: Solve for x
   x = 4,518,819,218.42/76,395.56
6. Step 6: Final answer
   x = 59,150.29