Finding the Fourth Proportional to 42,140.72, 58,099.92 and 30,054.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,140.72 : 58,099.92 = 30,054.98 : x
2. Step 2: Convert to fraction form
   42,140.72/58,099.92 = 30,054.98/x
3. Step 3: Cross multiply
   42,140.72x = 58,099.92 × 30,054.98
4. Step 4: Simplify right side
   42,140.72x = 1,746,191,973.68
5. Step 5: Solve for x
   x = 1,746,191,973.68/42,140.72
6. Step 6: Final answer
   x = 41,437.17