Finding the Fourth Proportional to 92,170.56, 138,254.94 and 42,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,170.56 : 138,254.94 = 42,236.50 : x
2. Step 2: Convert to fraction form
   92,170.56/138,254.94 = 42,236.50/x
3. Step 3: Cross multiply
   92,170.56x = 138,254.94 × 42,236.50
4. Step 4: Simplify right side
   92,170.56x = 5,839,404,773.31
5. Step 5: Solve for x
   x = 5,839,404,773.31/92,170.56
6. Step 6: Final answer
   x = 63,354.34