Finding the Fourth Proportional to 140,122,606.56, 210,184,795.53 and 91,906,736.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,122,606.56 : 210,184,795.53 = 91,906,736.10 : x
2. Step 2: Convert to fraction form
   140,122,606.56/210,184,795.53 = 91,906,736.10/x
3. Step 3: Cross multiply
   140,122,606.56x = 210,184,795.53 × 91,906,736.10
4. Step 4: Simplify right side
   140,122,606.56x = 19,317,398,535,008,168
5. Step 5: Solve for x
   x = 19,317,398,535,008,168/140,122,606.56
6. Step 6: Final answer
   x = 137,860,685.08