Finding the Fourth Proportional to 1,826,912,633.16, 2,521,141,866.42 and 991,537,203.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826,912,633.16 : 2,521,141,866.42 = 991,537,203.72 : x
2. Step 2: Convert to fraction form
   1,826,912,633.16/2,521,141,866.42 = 991,537,203.72/x
3. Step 3: Cross multiply
   1,826,912,633.16x = 2,521,141,866.42 × 991,537,203.72
4. Step 4: Simplify right side
   1,826,912,633.16x = 2,499,805,956,411,508,736
5. Step 5: Solve for x
   x = 2,499,805,956,411,508,736/1,826,912,633.16
6. Step 6: Final answer
   x = 1,368,322,661.43