Finding the Fourth Proportional to 65,300.22, 90,088.39 and 42,631.96

Step by Step Solution

1. Step 1: Write the proportion equation
   65,300.22 : 90,088.39 = 42,631.96 : x
2. Step 2: Convert to fraction form
   65,300.22/90,088.39 = 42,631.96/x
3. Step 3: Cross multiply
   65,300.22x = 90,088.39 × 42,631.96
4. Step 4: Simplify right side
   65,300.22x = 3,840,644,638.94
5. Step 5: Solve for x
   x = 3,840,644,638.94/65,300.22
6. Step 6: Final answer
   x = 58,815.19