Finding the Fourth Proportional to 139,991.18, 209,987.56 and 34,810.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,991.18 : 209,987.56 = 34,810.16 : x
2. Step 2: Convert to fraction form
   139,991.18/209,987.56 = 34,810.16/x
3. Step 3: Cross multiply
   139,991.18x = 209,987.56 × 34,810.16
4. Step 4: Simplify right side
   139,991.18x = 7,309,700,561.61
5. Step 5: Solve for x
   x = 7,309,700,561.61/139,991.18
6. Step 6: Final answer
   x = 52,215.44