Finding the Fourth Proportional to 74,112.52, 111,228.72 and 57,433

Step by Step Solution

1. Step 1: Write the proportion equation
   74,112.52 : 111,228.72 = 57,433 : x
2. Step 2: Convert to fraction form
   74,112.52/111,228.72 = 57,433/x
3. Step 3: Cross multiply
   74,112.52x = 111,228.72 × 57,433
4. Step 4: Simplify right side
   74,112.52x = 6,388,199,075.76
5. Step 5: Solve for x
   x = 6,388,199,075.76/74,112.52
6. Step 6: Final answer
   x = 86,195.95