Finding the Fourth Proportional to 76,262.81, 105,246.18 and 42,272.01

Step by Step Solution

1. Step 1: Write the proportion equation
   76,262.81 : 105,246.18 = 42,272.01 : x
2. Step 2: Convert to fraction form
   76,262.81/105,246.18 = 42,272.01/x
3. Step 3: Cross multiply
   76,262.81x = 105,246.18 × 42,272.01
4. Step 4: Simplify right side
   76,262.81x = 4,448,967,573.42
5. Step 5: Solve for x
   x = 4,448,967,573.42/76,262.81
6. Step 6: Final answer
   x = 58,337.32