Finding the Fourth Proportional to 81,748, 122,555.22 and 42,316.48

Step by Step Solution

1. Step 1: Write the proportion equation
   81,748 : 122,555.22 = 42,316.48 : x
2. Step 2: Convert to fraction form
   81,748/122,555.22 = 42,316.48/x
3. Step 3: Cross multiply
   81,748x = 122,555.22 × 42,316.48
4. Step 4: Simplify right side
   81,748x = 5,186,105,516.03
5. Step 5: Solve for x
   x = 5,186,105,516.03/81,748
6. Step 6: Final answer
   x = 63,440.15