Finding the Fourth Proportional to 76,135.25, 105,064.01 and 42,145.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,135.25 : 105,064.01 = 42,145.22 : x
2. Step 2: Convert to fraction form
   76,135.25/105,064.01 = 42,145.22/x
3. Step 3: Cross multiply
   76,135.25x = 105,064.01 × 42,145.22
4. Step 4: Simplify right side
   76,135.25x = 4,427,945,815.53
5. Step 5: Solve for x
   x = 4,427,945,815.53/76,135.25
6. Step 6: Final answer
   x = 58,158.94