Finding the Fourth Proportional to 258,112,162.18, 356,194,835.06 and 140,637,492.42

Step by Step Solution

1. Step 1: Write the proportion equation
   258,112,162.18 : 356,194,835.06 = 140,637,492.42 : x
2. Step 2: Convert to fraction form
   258,112,162.18/356,194,835.06 = 140,637,492.42/x
3. Step 3: Cross multiply
   258,112,162.18x = 356,194,835.06 × 140,637,492.42
4. Step 4: Simplify right side
   258,112,162.18x = 50,094,348,415,793,896
5. Step 5: Solve for x
   x = 50,094,348,415,793,896/258,112,162.18
6. Step 6: Final answer
   x = 194,079,767.47