Finding the Fourth Proportional to 76,507.21, 105,573.22 and 42,513.54

Step by Step Solution

1. Step 1: Write the proportion equation
   76,507.21 : 105,573.22 = 42,513.54 : x
2. Step 2: Convert to fraction form
   76,507.21/105,573.22 = 42,513.54/x
3. Step 3: Cross multiply
   76,507.21x = 105,573.22 × 42,513.54
4. Step 4: Simplify right side
   76,507.21x = 4,488,290,570.97
5. Step 5: Solve for x
   x = 4,488,290,570.97/76,507.21
6. Step 6: Final answer
   x = 58,664.94