Finding the Fourth Proportional to 139,968,796.30, 209,953,194.45 and 49,059,580.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,796.30 : 209,953,194.45 = 49,059,580.30 : x
2. Step 2: Convert to fraction form
   139,968,796.30/209,953,194.45 = 49,059,580.30/x
3. Step 3: Cross multiply
   139,968,796.30x = 209,953,194.45 × 49,059,580.30
4. Step 4: Simplify right side
   139,968,796.30x = 10,300,215,602,361,288
5. Step 5: Solve for x
   x = 10,300,215,602,361,288/139,968,796.30
6. Step 6: Final answer
   x = 73,589,370.45