Finding the Fourth Proportional to 72,236,454, 99,686,006.55 and 42,891,942.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,236,454 : 99,686,006.55 = 42,891,942.48 : x
2. Step 2: Convert to fraction form
   72,236,454/99,686,006.55 = 42,891,942.48/x
3. Step 3: Cross multiply
   72,236,454x = 99,686,006.55 × 42,891,942.48
4. Step 4: Simplify right side
   72,236,454x = 4,275,726,459,003,503
5. Step 5: Solve for x
   x = 4,275,726,459,003,503/72,236,454
6. Step 6: Final answer
   x = 59,190,702.51