Finding the Fourth Proportional to 139,870.70, 210,324.45 and 117,061.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,870.70 : 210,324.45 = 117,061.10 : x
2. Step 2: Convert to fraction form
   139,870.70/210,324.45 = 117,061.10/x
3. Step 3: Cross multiply
   139,870.70x = 210,324.45 × 117,061.10
4. Step 4: Simplify right side
   139,870.70x = 24,620,811,473.90
5. Step 5: Solve for x
   x = 24,620,811,473.90/139,870.70
6. Step 6: Final answer
   x = 176,025.51