Finding the Fourth Proportional to 76,434.17, 105,480.02 and 42,443.33

Step by Step Solution

1. Step 1: Write the proportion equation
   76,434.17 : 105,480.02 = 42,443.33 : x
2. Step 2: Convert to fraction form
   76,434.17/105,480.02 = 42,443.33/x
3. Step 3: Cross multiply
   76,434.17x = 105,480.02 × 42,443.33
4. Step 4: Simplify right side
   76,434.17x = 4,476,922,875.97
5. Step 5: Solve for x
   x = 4,476,922,875.97/76,434.17
6. Step 6: Final answer
   x = 58,572.27