Finding the Fourth Proportional to 65,721.42, 90,700.29 and 37,428.93

Step by Step Solution

1. Step 1: Write the proportion equation
   65,721.42 : 90,700.29 = 37,428.93 : x
2. Step 2: Convert to fraction form
   65,721.42/90,700.29 = 37,428.93/x
3. Step 3: Cross multiply
   65,721.42x = 90,700.29 × 37,428.93
4. Step 4: Simplify right side
   65,721.42x = 3,394,814,805.39
5. Step 5: Solve for x
   x = 3,394,814,805.39/65,721.42
6. Step 6: Final answer
   x = 51,654.62