Finding the Fourth Proportional to 1,530,624,837.50, 2,112,329,166.42 and 861,613,051.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530,624,837.50 : 2,112,329,166.42 = 861,613,051.94 : x
2. Step 2: Convert to fraction form
   1,530,624,837.50/2,112,329,166.42 = 861,613,051.94/x
3. Step 3: Cross multiply
   1,530,624,837.50x = 2,112,329,166.42 × 861,613,051.94
4. Step 4: Simplify right side
   1,530,624,837.50x = 1,820,010,379,781,012,480
5. Step 5: Solve for x
   x = 1,820,010,379,781,012,480/1,530,624,837.50
6. Step 6: Final answer
   x = 1,189,063,665.50