Finding the Fourth Proportional to 92,619.48, 138,937.74 and 42,713.37

Step by Step Solution

1. Step 1: Write the proportion equation
   92,619.48 : 138,937.74 = 42,713.37 : x
2. Step 2: Convert to fraction form
   92,619.48/138,937.74 = 42,713.37/x
3. Step 3: Cross multiply
   92,619.48x = 138,937.74 × 42,713.37
4. Step 4: Simplify right side
   92,619.48x = 5,934,499,095.58
5. Step 5: Solve for x
   x = 5,934,499,095.58/92,619.48
6. Step 6: Final answer
   x = 64,073.98