Finding the Fourth Proportional to 70,570.63, 105,666.40 and 37,221.31

Step by Step Solution

1. Step 1: Write the proportion equation
   70,570.63 : 105,666.40 = 37,221.31 : x
2. Step 2: Convert to fraction form
   70,570.63/105,666.40 = 37,221.31/x
3. Step 3: Cross multiply
   70,570.63x = 105,666.40 × 37,221.31
4. Step 4: Simplify right side
   70,570.63x = 3,933,041,830.98
5. Step 5: Solve for x
   x = 3,933,041,830.98/70,570.63
6. Step 6: Final answer
   x = 55,731.99