Finding the Fourth Proportional to 76,574.17, 105,672.45 and 42,581.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,574.17 : 105,672.45 = 42,581.94 : x
2. Step 2: Convert to fraction form
   76,574.17/105,672.45 = 42,581.94/x
3. Step 3: Cross multiply
   76,574.17x = 105,672.45 × 42,581.94
4. Step 4: Simplify right side
   76,574.17x = 4,499,737,925.55
5. Step 5: Solve for x
   x = 4,499,737,925.55/76,574.17
6. Step 6: Final answer
   x = 58,763.13