Finding the Fourth Proportional to 288,085,196.94, 397,557,540.63 and 155,926,169.34

Step by Step Solution

1. Step 1: Write the proportion equation
   288,085,196.94 : 397,557,540.63 = 155,926,169.34 : x
2. Step 2: Convert to fraction form
   288,085,196.94/397,557,540.63 = 155,926,169.34/x
3. Step 3: Cross multiply
   288,085,196.94x = 397,557,540.63 × 155,926,169.34
4. Step 4: Simplify right side
   288,085,196.94x = 61,989,624,402,667,312
5. Step 5: Solve for x
   x = 61,989,624,402,667,312/288,085,196.94
6. Step 6: Final answer
   x = 215,178,096.83