Finding the Fourth Proportional to 57,111.17, 78,838.13 and 42,967.49

Step by Step Solution

1. Step 1: Write the proportion equation
   57,111.17 : 78,838.13 = 42,967.49 : x
2. Step 2: Convert to fraction form
   57,111.17/78,838.13 = 42,967.49/x
3. Step 3: Cross multiply
   57,111.17x = 78,838.13 × 42,967.49
4. Step 4: Simplify right side
   57,111.17x = 3,387,476,347.56
5. Step 5: Solve for x
   x = 3,387,476,347.56/57,111.17
6. Step 6: Final answer
   x = 59,313.73