Finding the Fourth Proportional to 127,570.68, 191,404.62 and 57,433.86

Step by Step Solution

1. Step 1: Write the proportion equation
   127,570.68 : 191,404.62 = 57,433.86 : x
2. Step 2: Convert to fraction form
   127,570.68/191,404.62 = 57,433.86/x
3. Step 3: Cross multiply
   127,570.68x = 191,404.62 × 57,433.86
4. Step 4: Simplify right side
   127,570.68x = 10,993,106,148.43
5. Step 5: Solve for x
   x = 10,993,106,148.43/127,570.68
6. Step 6: Final answer
   x = 86,172.67