Finding the Fourth Proportional to 76,793.81, 105,972.05 and 42,806.01

Step by Step Solution

1. Step 1: Write the proportion equation
   76,793.81 : 105,972.05 = 42,806.01 : x
2. Step 2: Convert to fraction form
   76,793.81/105,972.05 = 42,806.01/x
3. Step 3: Cross multiply
   76,793.81x = 105,972.05 × 42,806.01
4. Step 4: Simplify right side
   76,793.81x = 4,536,240,739.04
5. Step 5: Solve for x
   x = 4,536,240,739.04/76,793.81
6. Step 6: Final answer
   x = 59,070.39