Finding the Fourth Proportional to 42,543.90, 58,709.61 and 26,637.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,543.90 : 58,709.61 = 26,637.12 : x
2. Step 2: Convert to fraction form
   42,543.90/58,709.61 = 26,637.12/x
3. Step 3: Cross multiply
   42,543.90x = 58,709.61 × 26,637.12
4. Step 4: Simplify right side
   42,543.90x = 1,563,854,926.72
5. Step 5: Solve for x
   x = 1,563,854,926.72/42,543.90
6. Step 6: Final answer
   x = 36,758.62