Finding the Fourth Proportional to 76,142.92, 105,075.98 and 42,150.70

Step by Step Solution

1. Step 1: Write the proportion equation
   76,142.92 : 105,075.98 = 42,150.70 : x
2. Step 2: Convert to fraction form
   76,142.92/105,075.98 = 42,150.70/x
3. Step 3: Cross multiply
   76,142.92x = 105,075.98 × 42,150.70
4. Step 4: Simplify right side
   76,142.92x = 4,429,026,110.19
5. Step 5: Solve for x
   x = 4,429,026,110.19/76,142.92
6. Step 6: Final answer
   x = 58,167.27