Finding the Fourth Proportional to 168,076,623.88, 231,945,738.42 and 90,814,287.88

Step by Step Solution

1. Step 1: Write the proportion equation
   168,076,623.88 : 231,945,738.42 = 90,814,287.88 : x
2. Step 2: Convert to fraction form
   168,076,623.88/231,945,738.42 = 90,814,287.88/x
3. Step 3: Cross multiply
   168,076,623.88x = 231,945,738.42 × 90,814,287.88
4. Step 4: Simplify right side
   168,076,623.88x = 21,063,987,061,413,056
5. Step 5: Solve for x
   x = 21,063,987,061,413,056/168,076,623.88
6. Step 6: Final answer
   x = 125,323,715.91