Finding the Fourth Proportional to 42,415.04, 58,506.80 and 30,494.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,415.04 : 58,506.80 = 30,494.48 : x
2. Step 2: Convert to fraction form
   42,415.04/58,506.80 = 30,494.48/x
3. Step 3: Cross multiply
   42,415.04x = 58,506.80 × 30,494.48
4. Step 4: Simplify right side
   42,415.04x = 1,784,134,442.46
5. Step 5: Solve for x
   x = 1,784,134,442.46/42,415.04
6. Step 6: Final answer
   x = 42,063.72