Finding the Fourth Proportional to 76,402.07, 105,435.78 and 42,411.23

Step by Step Solution

1. Step 1: Write the proportion equation
   76,402.07 : 105,435.78 = 42,411.23 : x
2. Step 2: Convert to fraction form
   76,402.07/105,435.78 = 42,411.23/x
3. Step 3: Cross multiply
   76,402.07x = 105,435.78 × 42,411.23
4. Step 4: Simplify right side
   76,402.07x = 4,471,661,115.81
5. Step 5: Solve for x
   x = 4,471,661,115.81/76,402.07
6. Step 6: Final answer
   x = 58,528.01