Finding the Fourth Proportional to 81,200.34, 112,055.40 and 45,389.97

Step by Step Solution

1. Step 1: Write the proportion equation
   81,200.34 : 112,055.40 = 45,389.97 : x
2. Step 2: Convert to fraction form
   81,200.34/112,055.40 = 45,389.97/x
3. Step 3: Cross multiply
   81,200.34x = 112,055.40 × 45,389.97
4. Step 4: Simplify right side
   81,200.34x = 5,086,191,244.34
5. Step 5: Solve for x
   x = 5,086,191,244.34/81,200.34
6. Step 6: Final answer
   x = 62,637.56