Finding the Fourth Proportional to 65,306.93, 90,096.71 and 42,638.06

Step by Step Solution

1. Step 1: Write the proportion equation
   65,306.93 : 90,096.71 = 42,638.06 : x
2. Step 2: Convert to fraction form
   65,306.93/90,096.71 = 42,638.06/x
3. Step 3: Cross multiply
   65,306.93x = 90,096.71 × 42,638.06
4. Step 4: Simplify right side
   65,306.93x = 3,841,548,938.83
5. Step 5: Solve for x
   x = 3,841,548,938.83/65,306.93
6. Step 6: Final answer
   x = 58,823.00