Finding the Fourth Proportional to 99,973,357.61, 137,929,819.82 and 58,148,544.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,973,357.61 : 137,929,819.82 = 58,148,544.50 : x
2. Step 2: Convert to fraction form
   99,973,357.61/137,929,819.82 = 58,148,544.50/x
3. Step 3: Cross multiply
   99,973,357.61x = 137,929,819.82 × 58,148,544.50
4. Step 4: Simplify right side
   99,973,357.61x = 8,020,418,264,699,860
5. Step 5: Solve for x
   x = 8,020,418,264,699,860/99,973,357.61
6. Step 6: Final answer
   x = 80,225,556.66