Finding the Fourth Proportional to 42,030.04, 63,054.30 and 12,450.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,030.04 : 63,054.30 = 12,450.18 : x
2. Step 2: Convert to fraction form
   42,030.04/63,054.30 = 12,450.18/x
3. Step 3: Cross multiply
   42,030.04x = 63,054.30 × 12,450.18
4. Step 4: Simplify right side
   42,030.04x = 785,037,384.77
5. Step 5: Solve for x
   x = 785,037,384.77/42,030.04
6. Step 6: Final answer
   x = 18,678.01