Finding the Fourth Proportional to 42,116, 63,179.12 and 12,932

Step by Step Solution

1. Step 1: Write the proportion equation
   42,116 : 63,179.12 = 12,932 : x
2. Step 2: Convert to fraction form
   42,116/63,179.12 = 12,932/x
3. Step 3: Cross multiply
   42,116x = 63,179.12 × 12,932
4. Step 4: Simplify right side
   42,116x = 817,032,379.84
5. Step 5: Solve for x
   x = 817,032,379.84/42,116
6. Step 6: Final answer
   x = 19,399.57