Finding the Fourth Proportional to 65,707,834.76, 90,688,194.34 and 39,602,386.68

Step by Step Solution

1. Step 1: Write the proportion equation
   65,707,834.76 : 90,688,194.34 = 39,602,386.68 : x
2. Step 2: Convert to fraction form
   65,707,834.76/90,688,194.34 = 39,602,386.68/x
3. Step 3: Cross multiply
   65,707,834.76x = 90,688,194.34 × 39,602,386.68
4. Step 4: Simplify right side
   65,707,834.76x = 3,591,468,939,563,667.50
5. Step 5: Solve for x
   x = 3,591,468,939,563,667.50/65,707,834.76
6. Step 6: Final answer
   x = 54,658,153.82