Finding the Fourth Proportional to 70,321, 105,507.42 and 37,039.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,321 : 105,507.42 = 37,039.72 : x
2. Step 2: Convert to fraction form
   70,321/105,507.42 = 37,039.72/x
3. Step 3: Cross multiply
   70,321x = 105,507.42 × 37,039.72
4. Step 4: Simplify right side
   70,321x = 3,907,965,294.72
5. Step 5: Solve for x
   x = 3,907,965,294.72/70,321
6. Step 6: Final answer
   x = 55,573.23