Finding the Fourth Proportional to 76,912.15, 106,139.01 and 42,922.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,912.15 : 106,139.01 = 42,922.08 : x
2. Step 2: Convert to fraction form
   76,912.15/106,139.01 = 42,922.08/x
3. Step 3: Cross multiply
   76,912.15x = 106,139.01 × 42,922.08
4. Step 4: Simplify right side
   76,912.15x = 4,555,706,333.04
5. Step 5: Solve for x
   x = 4,555,706,333.04/76,912.15
6. Step 6: Final answer
   x = 59,232.60