Finding the Fourth Proportional to 139,161,985.47, 192,076,986.69 and 79,657,775.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,161,985.47 : 192,076,986.69 = 79,657,775.33 : x
2. Step 2: Convert to fraction form
   139,161,985.47/192,076,986.69 = 79,657,775.33/x
3. Step 3: Cross multiply
   139,161,985.47x = 192,076,986.69 × 79,657,775.33
4. Step 4: Simplify right side
   139,161,985.47x = 15,300,425,450,855,036
5. Step 5: Solve for x
   x = 15,300,425,450,855,036/139,161,985.47
6. Step 6: Final answer
   x = 109,946,875.21