Finding the Fourth Proportional to 81,436.05, 112,386.35 and 45,637.58

Step by Step Solution

1. Step 1: Write the proportion equation
   81,436.05 : 112,386.35 = 45,637.58 : x
2. Step 2: Convert to fraction form
   81,436.05/112,386.35 = 45,637.58/x
3. Step 3: Cross multiply
   81,436.05x = 112,386.35 × 45,637.58
4. Step 4: Simplify right side
   81,436.05x = 5,129,041,434.09
5. Step 5: Solve for x
   x = 5,129,041,434.09/81,436.05
6. Step 6: Final answer
   x = 62,982.44