Finding the Fourth Proportional to 65,619,710,067.69, 90,569,767,765.13 and 39,893,523,505.99

Step by Step Solution

1. Step 1: Write the proportion equation
   65,619,710,067.69 : 90,569,767,765.13 = 39,893,523,505.99 : x
2. Step 2: Convert to fraction form
   65,619,710,067.69/90,569,767,765.13 = 39,893,523,505.99/x
3. Step 3: Cross multiply
   65,619,710,067.69x = 90,569,767,765.13 × 39,893,523,505.99
4. Step 4: Simplify right side
   65,619,710,067.69x = 3,613,147,159,270,439,518,208
5. Step 5: Solve for x
   x = 3,613,147,159,270,439,518,208/65,619,710,067.69
6. Step 6: Final answer
   x = 55,061,918,980.49