Finding the Fourth Proportional to 25,291,049.58, 34,902,493.18 and 15,499,601.91

Step by Step Solution

1. Step 1: Write the proportion equation
   25,291,049.58 : 34,902,493.18 = 15,499,601.91 : x
2. Step 2: Convert to fraction form
   25,291,049.58/34,902,493.18 = 15,499,601.91/x
3. Step 3: Cross multiply
   25,291,049.58x = 34,902,493.18 × 15,499,601.91
4. Step 4: Simplify right side
   25,291,049.58x = 540,974,749,917,741
5. Step 5: Solve for x
   x = 540,974,749,917,741/25,291,049.58
6. Step 6: Final answer
   x = 21,389,968.34