Finding the Fourth Proportional to 124,137.61, 186,060.59 and 57,436.81

Step by Step Solution

1. Step 1: Write the proportion equation
   124,137.61 : 186,060.59 = 57,436.81 : x
2. Step 2: Convert to fraction form
   124,137.61/186,060.59 = 57,436.81/x
3. Step 3: Cross multiply
   124,137.61x = 186,060.59 × 57,436.81
4. Step 4: Simplify right side
   124,137.61x = 10,686,726,756.32
5. Step 5: Solve for x
   x = 10,686,726,756.32/124,137.61
6. Step 6: Final answer
   x = 86,087.74