Finding the Fourth Proportional to 258,112,162.17, 356,194,835.07 and 140,637,492.42

Step by Step Solution

1. Step 1: Write the proportion equation
   258,112,162.17 : 356,194,835.07 = 140,637,492.42 : x
2. Step 2: Convert to fraction form
   258,112,162.17/356,194,835.07 = 140,637,492.42/x
3. Step 3: Cross multiply
   258,112,162.17x = 356,194,835.07 × 140,637,492.42
4. Step 4: Simplify right side
   258,112,162.17x = 50,094,348,417,200,272
5. Step 5: Solve for x
   x = 50,094,348,417,200,272/258,112,162.17
6. Step 6: Final answer
   x = 194,079,767.48