Finding the Fourth Proportional to 128,404,184, 192,492,900.71 and 98,246,678.72

Step by Step Solution

1. Step 1: Write the proportion equation
   128,404,184 : 192,492,900.71 = 98,246,678.72 : x
2. Step 2: Convert to fraction form
   128,404,184/192,492,900.71 = 98,246,678.72/x
3. Step 3: Cross multiply
   128,404,184x = 192,492,900.71 × 98,246,678.72
4. Step 4: Simplify right side
   128,404,184x = 18,911,788,171,444,996
5. Step 5: Solve for x
   x = 18,911,788,171,444,996/128,404,184
6. Step 6: Final answer
   x = 147,283,270.55