Finding the Fourth Proportional to 92,830,187.99, 128,109,116.69 and 55,666,518.86

Step by Step Solution

1. Step 1: Write the proportion equation
   92,830,187.99 : 128,109,116.69 = 55,666,518.86 : x
2. Step 2: Convert to fraction form
   92,830,187.99/128,109,116.69 = 55,666,518.86/x
3. Step 3: Cross multiply
   92,830,187.99x = 128,109,116.69 × 55,666,518.86
4. Step 4: Simplify right side
   92,830,187.99x = 7,131,388,559,442,947
5. Step 5: Solve for x
   x = 7,131,388,559,442,947/92,830,187.99
6. Step 6: Final answer
   x = 76,821,869.20