Finding the Fourth Proportional to 21,385,321.80, 32,007,123.90 and 19,684,710.60

Step by Step Solution

1. Step 1: Write the proportion equation
   21,385,321.80 : 32,007,123.90 = 19,684,710.60 : x
2. Step 2: Convert to fraction form
   21,385,321.80/32,007,123.90 = 19,684,710.60/x
3. Step 3: Cross multiply
   21,385,321.80x = 32,007,123.90 × 19,684,710.60
4. Step 4: Simplify right side
   21,385,321.80x = 630,050,971,109,843.38
5. Step 5: Solve for x
   x = 630,050,971,109,843.38/21,385,321.80
6. Step 6: Final answer
   x = 29,461,841.96