Finding the Fourth Proportional to 99,862,680.33, 137,814,754.89 and 55,809,677.87

Step by Step Solution

1. Step 1: Write the proportion equation
   99,862,680.33 : 137,814,754.89 = 55,809,677.87 : x
2. Step 2: Convert to fraction form
   99,862,680.33/137,814,754.89 = 55,809,677.87/x
3. Step 3: Cross multiply
   99,862,680.33x = 137,814,754.89 × 55,809,677.87
4. Step 4: Simplify right side
   99,862,680.33x = 7,691,397,076,143,906
5. Step 5: Solve for x
   x = 7,691,397,076,143,906/99,862,680.33
6. Step 6: Final answer
   x = 77,019,734.01