Finding the Fourth Proportional to 65,707,955.96, 90,689,109.71 and 42,215,859.68

Step by Step Solution

1. Step 1: Write the proportion equation
   65,707,955.96 : 90,689,109.71 = 42,215,859.68 : x
2. Step 2: Convert to fraction form
   65,707,955.96/90,689,109.71 = 42,215,859.68/x
3. Step 3: Cross multiply
   65,707,955.96x = 90,689,109.71 × 42,215,859.68
4. Step 4: Simplify right side
   65,707,955.96x = 3,828,518,729,356,960.50
5. Step 5: Solve for x
   x = 3,828,518,729,356,960.50/65,707,955.96
6. Step 6: Final answer
   x = 58,265,679.91