Finding the Fourth Proportional to 243,471,025.83, 336,021,131.98 and 136,186,310.51

Step by Step Solution

1. Step 1: Write the proportion equation
   243,471,025.83 : 336,021,131.98 = 136,186,310.51 : x
2. Step 2: Convert to fraction form
   243,471,025.83/336,021,131.98 = 136,186,310.51/x
3. Step 3: Cross multiply
   243,471,025.83x = 336,021,131.98 × 136,186,310.51
4. Step 4: Simplify right side
   243,471,025.83x = 45,761,478,216,697,200
5. Step 5: Solve for x
   x = 45,761,478,216,697,200/243,471,025.83
6. Step 6: Final answer
   x = 187,954,513.52