Finding the Fourth Proportional to 139,359,850.89, 209,026,268.42 and 42,316,411.53

Step by Step Solution

1. Step 1: Write the proportion equation
   139,359,850.89 : 209,026,268.42 = 42,316,411.53 : x
2. Step 2: Convert to fraction form
   139,359,850.89/209,026,268.42 = 42,316,411.53/x
3. Step 3: Cross multiply
   139,359,850.89x = 209,026,268.42 × 42,316,411.53
4. Step 4: Simplify right side
   139,359,850.89x = 8,845,241,595,613,228
5. Step 5: Solve for x
   x = 8,845,241,595,613,228/139,359,850.89
6. Step 6: Final answer
   x = 63,470,515.64