Finding the Fourth Proportional to 21,692,799.86, 29,878,597.32 and 16,168,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,692,799.86 : 29,878,597.32 = 16,168,470.72 : x
2. Step 2: Convert to fraction form
   21,692,799.86/29,878,597.32 = 16,168,470.72/x
3. Step 3: Cross multiply
   21,692,799.86x = 29,878,597.32 × 16,168,470.72
4. Step 4: Simplify right side
   21,692,799.86x = 483,091,225,923,090.50
5. Step 5: Solve for x
   x = 483,091,225,923,090.50/21,692,799.86
6. Step 6: Final answer
   x = 22,269,657.63