Finding the Fourth Proportional to 76,176.86, 105,123.84 and 42,188.06

Step by Step Solution

1. Step 1: Write the proportion equation
   76,176.86 : 105,123.84 = 42,188.06 : x
2. Step 2: Convert to fraction form
   76,176.86/105,123.84 = 42,188.06/x
3. Step 3: Cross multiply
   76,176.86x = 105,123.84 × 42,188.06
4. Step 4: Simplify right side
   76,176.86x = 4,434,970,869.35
5. Step 5: Solve for x
   x = 4,434,970,869.35/76,176.86
6. Step 6: Final answer
   x = 58,219.40