Finding the Fourth Proportional to 147,690,393.59, 221,573,892.35 and 78,546,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,690,393.59 : 221,573,892.35 = 78,546,339.50 : x
2. Step 2: Convert to fraction form
   147,690,393.59/221,573,892.35 = 78,546,339.50/x
3. Step 3: Cross multiply
   147,690,393.59x = 221,573,892.35 × 78,546,339.50
4. Step 4: Simplify right side
   147,690,393.59x = 17,403,818,171,948,050
5. Step 5: Solve for x
   x = 17,403,818,171,948,050/147,690,393.59
6. Step 6: Final answer
   x = 117,839,879.42