Finding the Fourth Proportional to 99,972,300.45, 137,991,103.82 and 58,166,198.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99,972,300.45 : 137,991,103.82 = 58,166,198.94 : x
2. Step 2: Convert to fraction form
   99,972,300.45/137,991,103.82 = 58,166,198.94/x
3. Step 3: Cross multiply
   99,972,300.45x = 137,991,103.82 × 58,166,198.94
4. Step 4: Simplify right side
   99,972,300.45x = 8,026,417,996,744,313
5. Step 5: Solve for x
   x = 8,026,417,996,744,313/99,972,300.45
6. Step 6: Final answer
   x = 80,286,418.94