Finding the Fourth Proportional to 74,145.88, 102,321.31 and 42,314.09

Step by Step Solution

1. Step 1: Write the proportion equation
   74,145.88 : 102,321.31 = 42,314.09 : x
2. Step 2: Convert to fraction form
   74,145.88/102,321.31 = 42,314.09/x
3. Step 3: Cross multiply
   74,145.88x = 102,321.31 × 42,314.09
4. Step 4: Simplify right side
   74,145.88x = 4,329,633,120.26
5. Step 5: Solve for x
   x = 4,329,633,120.26/74,145.88
6. Step 6: Final answer
   x = 58,393.45