Finding the Fourth Proportional to 278,326,442.78, 384,079,967.83 and 154,575,091.52

Step by Step Solution

1. Step 1: Write the proportion equation
   278,326,442.78 : 384,079,967.83 = 154,575,091.52 : x
2. Step 2: Convert to fraction form
   278,326,442.78/384,079,967.83 = 154,575,091.52/x
3. Step 3: Cross multiply
   278,326,442.78x = 384,079,967.83 × 154,575,091.52
4. Step 4: Simplify right side
   278,326,442.78x = 59,369,196,178,320,904
5. Step 5: Solve for x
   x = 59,369,196,178,320,904/278,326,442.78
6. Step 6: Final answer
   x = 213,307,781.99