Finding the Fourth Proportional to 990,111,581.18, 1,366,364,857.83 and 544,075,059.86

Step by Step Solution

1. Step 1: Write the proportion equation
   990,111,581.18 : 1,366,364,857.83 = 544,075,059.86 : x
2. Step 2: Convert to fraction form
   990,111,581.18/1,366,364,857.83 = 544,075,059.86/x
3. Step 3: Cross multiply
   990,111,581.18x = 1,366,364,857.83 × 544,075,059.86
4. Step 4: Simplify right side
   990,111,581.18x = 743,405,041,813,783,296
5. Step 5: Solve for x
   x = 743,405,041,813,783,296/990,111,581.18
6. Step 6: Final answer
   x = 750,829,558.96