Finding the Fourth Proportional to 151,048.40, 208,462.71 and 86,522.78

Step by Step Solution

1. Step 1: Write the proportion equation
   151,048.40 : 208,462.71 = 86,522.78 : x
2. Step 2: Convert to fraction form
   151,048.40/208,462.71 = 86,522.78/x
3. Step 3: Cross multiply
   151,048.40x = 208,462.71 × 86,522.78
4. Step 4: Simplify right side
   151,048.40x = 18,036,774,041.15
5. Step 5: Solve for x
   x = 18,036,774,041.15/151,048.40
6. Step 6: Final answer
   x = 119,410.56