Finding the Fourth Proportional to 116,766,810, 161,141,561.28 and 64,559,215.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,766,810 : 161,141,561.28 = 64,559,215.80 : x
2. Step 2: Convert to fraction form
   116,766,810/161,141,561.28 = 64,559,215.80/x
3. Step 3: Cross multiply
   116,766,810x = 161,141,561.28 × 64,559,215.80
4. Step 4: Simplify right side
   116,766,810x = 10,403,172,829,024,444
5. Step 5: Solve for x
   x = 10,403,172,829,024,444/116,766,810
6. Step 6: Final answer
   x = 89,093,577.44