Finding the Fourth Proportional to 76,453.73, 105,500.10 and 42,458.93

Step by Step Solution

1. Step 1: Write the proportion equation
   76,453.73 : 105,500.10 = 42,458.93 : x
2. Step 2: Convert to fraction form
   76,453.73/105,500.10 = 42,458.93/x
3. Step 3: Cross multiply
   76,453.73x = 105,500.10 × 42,458.93
4. Step 4: Simplify right side
   76,453.73x = 4,479,421,360.89
5. Step 5: Solve for x
   x = 4,479,421,360.89/76,453.73
6. Step 6: Final answer
   x = 58,589.96