Finding the Fourth Proportional to 752,357,150.15, 1,128,088,653.89 and 286,052,707.61

Step by Step Solution

1. Step 1: Write the proportion equation
   752,357,150.15 : 1,128,088,653.89 = 286,052,707.61 : x
2. Step 2: Convert to fraction form
   752,357,150.15/1,128,088,653.89 = 286,052,707.61/x
3. Step 3: Cross multiply
   752,357,150.15x = 1,128,088,653.89 × 286,052,707.61
4. Step 4: Simplify right side
   752,357,150.15x = 322,692,813,868,917,120
5. Step 5: Solve for x
   x = 322,692,813,868,917,120/752,357,150.15
6. Step 6: Final answer
   x = 428,909,081.02