Finding the Fourth Proportional to 58,359.39, 80,423.60 and 42,418.59

Step by Step Solution

1. Step 1: Write the proportion equation
   58,359.39 : 80,423.60 = 42,418.59 : x
2. Step 2: Convert to fraction form
   58,359.39/80,423.60 = 42,418.59/x
3. Step 3: Cross multiply
   58,359.39x = 80,423.60 × 42,418.59
4. Step 4: Simplify right side
   58,359.39x = 3,411,455,502.63
5. Step 5: Solve for x
   x = 3,411,455,502.63/58,359.39
6. Step 6: Final answer
   x = 58,455.98