Finding the Fourth Proportional to 141,570.05, 212,428.85 and 57,392.42

Step by Step Solution

1. Step 1: Write the proportion equation
   141,570.05 : 212,428.85 = 57,392.42 : x
2. Step 2: Convert to fraction form
   141,570.05/212,428.85 = 57,392.42/x
3. Step 3: Cross multiply
   141,570.05x = 212,428.85 × 57,392.42
4. Step 4: Simplify right side
   141,570.05x = 12,191,804,430.21
5. Step 5: Solve for x
   x = 12,191,804,430.21/141,570.05
6. Step 6: Final answer
   x = 86,118.53