Finding the Fourth Proportional to 72,003,057.60, 99,364,820.28 and 42,251,495.97

Step by Step Solution

1. Step 1: Write the proportion equation
   72,003,057.60 : 99,364,820.28 = 42,251,495.97 : x
2. Step 2: Convert to fraction form
   72,003,057.60/99,364,820.28 = 42,251,495.97/x
3. Step 3: Cross multiply
   72,003,057.60x = 99,364,820.28 × 42,251,495.97
4. Step 4: Simplify right side
   72,003,057.60x = 4,198,312,303,620,194
5. Step 5: Solve for x
   x = 4,198,312,303,620,194/72,003,057.60
6. Step 6: Final answer
   x = 58,307,416.98