Finding the Fourth Proportional to 139,920.48, 209,818.96 and 40,058.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,920.48 : 209,818.96 = 40,058.01 : x
2. Step 2: Convert to fraction form
   139,920.48/209,818.96 = 40,058.01/x
3. Step 3: Cross multiply
   139,920.48x = 209,818.96 × 40,058.01
4. Step 4: Simplify right side
   139,920.48x = 8,404,929,897.72
5. Step 5: Solve for x
   x = 8,404,929,897.72/139,920.48
6. Step 6: Final answer
   x = 60,069.33