Finding the Fourth Proportional to 1,361,498,541.54, 1,879,735,493.61 and 1,111,199,981.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361,498,541.54 : 1,879,735,493.61 = 1,111,199,981.91 : x
2. Step 2: Convert to fraction form
   1,361,498,541.54/1,879,735,493.61 = 1,111,199,981.91/x
3. Step 3: Cross multiply
   1,361,498,541.54x = 1,879,735,493.61 × 1,111,199,981.91
4. Step 4: Simplify right side
   1,361,498,541.54x = 2,088,762,046,499,715,840
5. Step 5: Solve for x
   x = 2,088,762,046,499,715,840/1,361,498,541.54
6. Step 6: Final answer
   x = 1,534,163,998.54