Finding the Fourth Proportional to 42,090.15, 63,222.71 and 33,385.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,090.15 : 63,222.71 = 33,385.89 : x
2. Step 2: Convert to fraction form
   42,090.15/63,222.71 = 33,385.89/x
3. Step 3: Cross multiply
   42,090.15x = 63,222.71 × 33,385.89
4. Step 4: Simplify right side
   42,090.15x = 2,110,746,274.63
5. Step 5: Solve for x
   x = 2,110,746,274.63/42,090.15
6. Step 6: Final answer
   x = 50,148.22