Finding the Fourth Proportional to 298,704,499.47, 448,122,556.04 and 91,444,477.77

Step by Step Solution

1. Step 1: Write the proportion equation
   298,704,499.47 : 448,122,556.04 = 91,444,477.77 : x
2. Step 2: Convert to fraction form
   298,704,499.47/448,122,556.04 = 91,444,477.77/x
3. Step 3: Cross multiply
   298,704,499.47x = 448,122,556.04 × 91,444,477.77
4. Step 4: Simplify right side
   298,704,499.47x = 40,978,333,113,578,136
5. Step 5: Solve for x
   x = 40,978,333,113,578,136/298,704,499.47
6. Step 6: Final answer
   x = 137,186,862.56