Finding the Fourth Proportional to 76,238.64, 105,209.32 and 42,704.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,238.64 : 105,209.32 = 42,704.56 : x
2. Step 2: Convert to fraction form
   76,238.64/105,209.32 = 42,704.56/x
3. Step 3: Cross multiply
   76,238.64x = 105,209.32 × 42,704.56
4. Step 4: Simplify right side
   76,238.64x = 4,492,917,718.50
5. Step 5: Solve for x
   x = 4,492,917,718.50/76,238.64
6. Step 6: Final answer
   x = 58,932.29