Finding the Fourth Proportional to 139,942,499,636.40, 209,962,727,057.16 and 40,575,106,975.92

Step by Step Solution

1. Step 1: Write the proportion equation
   139,942,499,636.40 : 209,962,727,057.16 = 40,575,106,975.92 : x
2. Step 2: Convert to fraction form
   139,942,499,636.40/209,962,727,057.16 = 40,575,106,975.92/x
3. Step 3: Cross multiply
   139,942,499,636.40x = 209,962,727,057.16 × 40,575,106,975.92
4. Step 4: Simplify right side
   139,942,499,636.40x = 8,519,260,111,300,159,602,688
5. Step 5: Solve for x
   x = 8,519,260,111,300,159,602,688/139,942,499,636.40
6. Step 6: Final answer
   x = 60,876,861,092.48