Finding the Fourth Proportional to 81,422.37, 112,361.25 and 45,123.06

Step by Step Solution

1. Step 1: Write the proportion equation
   81,422.37 : 112,361.25 = 45,123.06 : x
2. Step 2: Convert to fraction form
   81,422.37/112,361.25 = 45,123.06/x
3. Step 3: Cross multiply
   81,422.37x = 112,361.25 × 45,123.06
4. Step 4: Simplify right side
   81,422.37x = 5,070,083,130.14
5. Step 5: Solve for x
   x = 5,070,083,130.14/81,422.37
6. Step 6: Final answer
   x = 62,268.92