Finding the Fourth Proportional to 338,928,233.60, 508,588,492.10 and 142,174,026.51

Step by Step Solution

1. Step 1: Write the proportion equation
   338,928,233.60 : 508,588,492.10 = 142,174,026.51 : x
2. Step 2: Convert to fraction form
   338,928,233.60/508,588,492.10 = 142,174,026.51/x
3. Step 3: Cross multiply
   338,928,233.60x = 508,588,492.10 × 142,174,026.51
4. Step 4: Simplify right side
   338,928,233.60x = 72,308,073,757,795,456
5. Step 5: Solve for x
   x = 72,308,073,757,795,456/338,928,233.60
6. Step 6: Final answer
   x = 213,343,317.52