Finding the Fourth Proportional to 139,959,312.80, 193,143,934.76 and 78,079,651.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,959,312.80 : 193,143,934.76 = 78,079,651.37 : x
2. Step 2: Convert to fraction form
   139,959,312.80/193,143,934.76 = 78,079,651.37/x
3. Step 3: Cross multiply
   139,959,312.80x = 193,143,934.76 × 78,079,651.37
4. Step 4: Simplify right side
   139,959,312.80x = 15,080,611,089,325,104
5. Step 5: Solve for x
   x = 15,080,611,089,325,104/139,959,312.80
6. Step 6: Final answer
   x = 107,749,965.24