Finding the Fourth Proportional to 42,061.48, 63,110.75 and 19,890.77

Step by Step Solution

1. Step 1: Write the proportion equation
   42,061.48 : 63,110.75 = 19,890.77 : x
2. Step 2: Convert to fraction form
   42,061.48/63,110.75 = 19,890.77/x
3. Step 3: Cross multiply
   42,061.48x = 63,110.75 × 19,890.77
4. Step 4: Simplify right side
   42,061.48x = 1,255,320,997.77
5. Step 5: Solve for x
   x = 1,255,320,997.77/42,061.48
6. Step 6: Final answer
   x = 29,844.91