Finding the Fourth Proportional to 76,242.74, 105,215.72 and 42,251.63

Step by Step Solution

1. Step 1: Write the proportion equation
   76,242.74 : 105,215.72 = 42,251.63 : x
2. Step 2: Convert to fraction form
   76,242.74/105,215.72 = 42,251.63/x
3. Step 3: Cross multiply
   76,242.74x = 105,215.72 × 42,251.63
4. Step 4: Simplify right side
   76,242.74x = 4,445,534,934.29
5. Step 5: Solve for x
   x = 4,445,534,934.29/76,242.74
6. Step 6: Final answer
   x = 58,307.65