Finding the Fourth Proportional to 139,968,116.05, 209,952,174.08 and 103,688,410.45

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968,116.05 : 209,952,174.08 = 103,688,410.45 : x
2. Step 2: Convert to fraction form
   139,968,116.05/209,952,174.08 = 103,688,410.45/x
3. Step 3: Cross multiply
   139,968,116.05x = 209,952,174.08 × 103,688,410.45
4. Step 4: Simplify right side
   139,968,116.05x = 21,769,607,200,876,892
5. Step 5: Solve for x
   x = 21,769,607,200,876,892/139,968,116.05
6. Step 6: Final answer
   x = 155,532,615.68