Finding the Fourth Proportional to 223,026,985.86, 307,759,196.30 and 128,947,168.91

Step by Step Solution

1. Step 1: Write the proportion equation
   223,026,985.86 : 307,759,196.30 = 128,947,168.91 : x
2. Step 2: Convert to fraction form
   223,026,985.86/307,759,196.30 = 128,947,168.91/x
3. Step 3: Cross multiply
   223,026,985.86x = 307,759,196.30 × 128,947,168.91
4. Step 4: Simplify right side
   223,026,985.86x = 39,684,677,068,161,808
5. Step 5: Solve for x
   x = 39,684,677,068,161,808/223,026,985.86
6. Step 6: Final answer
   x = 177,936,660.52