Finding the Fourth Proportional to 92,172.82, 138,258.32 and 42,238.75

Step by Step Solution

1. Step 1: Write the proportion equation
   92,172.82 : 138,258.32 = 42,238.75 : x
2. Step 2: Convert to fraction form
   92,172.82/138,258.32 = 42,238.75/x
3. Step 3: Cross multiply
   92,172.82x = 138,258.32 × 42,238.75
4. Step 4: Simplify right side
   92,172.82x = 5,839,858,402.71
5. Step 5: Solve for x
   x = 5,839,858,402.71/92,172.82
6. Step 6: Final answer
   x = 63,357.71