Finding the Fourth Proportional to 99,830,721.42, 137,773,524.53 and 55,175,732.86

Step by Step Solution

1. Step 1: Write the proportion equation
   99,830,721.42 : 137,773,524.53 = 55,175,732.86 : x
2. Step 2: Convert to fraction form
   99,830,721.42/137,773,524.53 = 55,175,732.86/x
3. Step 3: Cross multiply
   99,830,721.42x = 137,773,524.53 × 55,175,732.86
4. Step 4: Simplify right side
   99,830,721.42x = 7,601,755,185,130,310
5. Step 5: Solve for x
   x = 7,601,755,185,130,310/99,830,721.42
6. Step 6: Final answer
   x = 76,146,451.49