Finding the Fourth Proportional to 81,802.33, 122,769.12 and 42,370.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,802.33 : 122,769.12 = 42,370.72 : x
2. Step 2: Convert to fraction form
   81,802.33/122,769.12 = 42,370.72/x
3. Step 3: Cross multiply
   81,802.33x = 122,769.12 × 42,370.72
4. Step 4: Simplify right side
   81,802.33x = 5,201,816,008.17
5. Step 5: Solve for x
   x = 5,201,816,008.17/81,802.33
6. Step 6: Final answer
   x = 63,590.07