Finding the Fourth Proportional to 76,323.05, 105,332.28 and 42,342.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,323.05 : 105,332.28 = 42,342.50 : x
2. Step 2: Convert to fraction form
   76,323.05/105,332.28 = 42,342.50/x
3. Step 3: Cross multiply
   76,323.05x = 105,332.28 × 42,342.50
4. Step 4: Simplify right side
   76,323.05x = 4,460,031,539.24
5. Step 5: Solve for x
   x = 4,460,031,539.24/76,323.05
6. Step 6: Final answer
   x = 58,436.23