Finding the Fourth Proportional to 99,841,142.70, 137,778,133.82 and 55,788,503.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,841,142.70 : 137,778,133.82 = 55,788,503.56 : x
2. Step 2: Convert to fraction form
   99,841,142.70/137,778,133.82 = 55,788,503.56/x
3. Step 3: Cross multiply
   99,841,142.70x = 137,778,133.82 × 55,788,503.56
4. Step 4: Simplify right side
   99,841,142.70x = 7,686,435,908,483,838
5. Step 5: Solve for x
   x = 7,686,435,908,483,838/99,841,142.70
6. Step 6: Final answer
   x = 76,986,658.01