Finding the Fourth Proportional to 76,381.82, 105,398.28 and 42,381.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,381.82 : 105,398.28 = 42,381.48 : x
2. Step 2: Convert to fraction form
   76,381.82/105,398.28 = 42,381.48/x
3. Step 3: Cross multiply
   76,381.82x = 105,398.28 × 42,381.48
4. Step 4: Simplify right side
   76,381.82x = 4,466,935,095.85
5. Step 5: Solve for x
   x = 4,466,935,095.85/76,381.82
6. Step 6: Final answer
   x = 58,481.65