Finding the Fourth Proportional to 1,528,194,819.15, 2,108,896,173.15 and 859,142,846.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528,194,819.15 : 2,108,896,173.15 = 859,142,846.31 : x
2. Step 2: Convert to fraction form
   1,528,194,819.15/2,108,896,173.15 = 859,142,846.31/x
3. Step 3: Cross multiply
   1,528,194,819.15x = 2,108,896,173.15 × 859,142,846.31
4. Step 4: Simplify right side
   1,528,194,819.15x = 1,811,843,060,772,357,632
5. Step 5: Solve for x
   x = 1,811,843,060,772,357,632/1,528,194,819.15
6. Step 6: Final answer
   x = 1,185,610,000.81