Finding the Fourth Proportional to 42,321.79, 58,356.12 and 26,987.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,321.79 : 58,356.12 = 26,987.86 : x
2. Step 2: Convert to fraction form
   42,321.79/58,356.12 = 26,987.86/x
3. Step 3: Cross multiply
   42,321.79x = 58,356.12 × 26,987.86
4. Step 4: Simplify right side
   42,321.79x = 1,574,906,796.70
5. Step 5: Solve for x
   x = 1,574,906,796.70/42,321.79
6. Step 6: Final answer
   x = 37,212.67