Finding the Fourth Proportional to 139,161,988.47, 192,076,990.83 and 79,657,778.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,161,988.47 : 192,076,990.83 = 79,657,778.33 : x
2. Step 2: Convert to fraction form
   139,161,988.47/192,076,990.83 = 79,657,778.33/x
3. Step 3: Cross multiply
   139,161,988.47x = 192,076,990.83 × 79,657,778.33
4. Step 4: Simplify right side
   139,161,988.47x = 15,300,426,356,869,200
5. Step 5: Solve for x
   x = 15,300,426,356,869,200/139,161,988.47
6. Step 6: Final answer
   x = 109,946,879.35