Finding the Fourth Proportional to 81,152.35, 111,990.80 and 45,343.87

Step by Step Solution

1. Step 1: Write the proportion equation
   81,152.35 : 111,990.80 = 45,343.87 : x
2. Step 2: Convert to fraction form
   81,152.35/111,990.80 = 45,343.87/x
3. Step 3: Cross multiply
   81,152.35x = 111,990.80 × 45,343.87
4. Step 4: Simplify right side
   81,152.35x = 5,078,096,109.78
5. Step 5: Solve for x
   x = 5,078,096,109.78/81,152.35
6. Step 6: Final answer
   x = 62,574.85