Finding the Fourth Proportional to 1,388,238,474.31, 1,915,769,115.86 and 793,535,842.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,238,474.31 : 1,915,769,115.86 = 793,535,842.10 : x
2. Step 2: Convert to fraction form
   1,388,238,474.31/1,915,769,115.86 = 793,535,842.10/x
3. Step 3: Cross multiply
   1,388,238,474.31x = 1,915,769,115.86 × 793,535,842.10
4. Step 4: Simplify right side
   1,388,238,474.31x = 1,520,231,458,623,959,296
5. Step 5: Solve for x
   x = 1,520,231,458,623,959,296/1,388,238,474.31
6. Step 6: Final answer
   x = 1,095,079,474.28