Finding the Fourth Proportional to 64,936,604,647.57, 89,580,670,126.24 and 56,350,980,984.45

Step by Step Solution

1. Step 1: Write the proportion equation
   64,936,604,647.57 : 89,580,670,126.24 = 56,350,980,984.45 : x
2. Step 2: Convert to fraction form
   64,936,604,647.57/89,580,670,126.24 = 56,350,980,984.45/x
3. Step 3: Cross multiply
   64,936,604,647.57x = 89,580,670,126.24 × 56,350,980,984.45
4. Step 4: Simplify right side
   64,936,604,647.57x = 5,047,958,638,858,038,411,264
5. Step 5: Solve for x
   x = 5,047,958,638,858,038,411,264/64,936,604,647.57
6. Step 6: Final answer
   x = 77,736,719,778.54