Finding the Fourth Proportional to 58,538.90, 80,783.69 and 31,681.42

Step by Step Solution

1. Step 1: Write the proportion equation
   58,538.90 : 80,783.69 = 31,681.42 : x
2. Step 2: Convert to fraction form
   58,538.90/80,783.69 = 31,681.42/x
3. Step 3: Cross multiply
   58,538.90x = 80,783.69 × 31,681.42
4. Step 4: Simplify right side
   58,538.90x = 2,559,341,651.67
5. Step 5: Solve for x
   x = 2,559,341,651.67/58,538.90
6. Step 6: Final answer
   x = 43,720.36