Finding the Fourth Proportional to 151,345,494.32, 208,856,778.54 and 81,730,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,345,494.32 : 208,856,778.54 = 81,730,869.50 : x
2. Step 2: Convert to fraction form
   151,345,494.32/208,856,778.54 = 81,730,869.50/x
3. Step 3: Cross multiply
   151,345,494.32x = 208,856,778.54 × 81,730,869.50
4. Step 4: Simplify right side
   151,345,494.32x = 17,070,046,111,043,140
5. Step 5: Solve for x
   x = 17,070,046,111,043,140/151,345,494.32
6. Step 6: Final answer
   x = 112,788,597.95