Finding the Fourth Proportional to 76,148.94, 105,083.28 and 42,156.30

Step by Step Solution

1. Step 1: Write the proportion equation
   76,148.94 : 105,083.28 = 42,156.30 : x
2. Step 2: Convert to fraction form
   76,148.94/105,083.28 = 42,156.30/x
3. Step 3: Cross multiply
   76,148.94x = 105,083.28 × 42,156.30
4. Step 4: Simplify right side
   76,148.94x = 4,429,922,276.66
5. Step 5: Solve for x
   x = 4,429,922,276.66/76,148.94
6. Step 6: Final answer
   x = 58,174.44