Finding the Fourth Proportional to 76,516.61, 105,590.39 and 42,061.46

Step by Step Solution

1. Step 1: Write the proportion equation
   76,516.61 : 105,590.39 = 42,061.46 : x
2. Step 2: Convert to fraction form
   76,516.61/105,590.39 = 42,061.46/x
3. Step 3: Cross multiply
   76,516.61x = 105,590.39 × 42,061.46
4. Step 4: Simplify right side
   76,516.61x = 4,441,285,227.11
5. Step 5: Solve for x
   x = 4,441,285,227.11/76,516.61
6. Step 6: Final answer
   x = 58,043.42