Finding the Fourth Proportional to 55,131.48, 76,112.61 and 42,186.42

Step by Step Solution

1. Step 1: Write the proportion equation
   55,131.48 : 76,112.61 = 42,186.42 : x
2. Step 2: Convert to fraction form
   55,131.48/76,112.61 = 42,186.42/x
3. Step 3: Cross multiply
   55,131.48x = 76,112.61 × 42,186.42
4. Step 4: Simplify right side
   55,131.48x = 3,210,918,532.76
5. Step 5: Solve for x
   x = 3,210,918,532.76/55,131.48
6. Step 6: Final answer
   x = 58,241.11