Finding the Fourth Proportional to 42,151.84, 63,263.23 and 21,085.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,151.84 : 63,263.23 = 21,085.56 : x
2. Step 2: Convert to fraction form
   42,151.84/63,263.23 = 21,085.56/x
3. Step 3: Cross multiply
   42,151.84x = 63,263.23 × 21,085.56
4. Step 4: Simplify right side
   42,151.84x = 1,333,940,631.96
5. Step 5: Solve for x
   x = 1,333,940,631.96/42,151.84
6. Step 6: Final answer
   x = 31,646.08