Finding the Fourth Proportional to 92,830,053.63, 128,108,931 and 55,666,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,830,053.63 : 128,108,931 = 55,666,384.50 : x
2. Step 2: Convert to fraction form
   92,830,053.63/128,108,931 = 55,666,384.50/x
3. Step 3: Cross multiply
   92,830,053.63x = 128,108,931 × 55,666,384.50
4. Step 4: Simplify right side
   92,830,053.63x = 7,131,361,010,929,970
5. Step 5: Solve for x
   x = 7,131,361,010,929,970/92,830,053.63
6. Step 6: Final answer
   x = 76,821,683.63