Finding the Fourth Proportional to 77,708,109.69, 107,236,636.16 and 42,425,913.69

Step by Step Solution

1. Step 1: Write the proportion equation
   77,708,109.69 : 107,236,636.16 = 42,425,913.69 : x
2. Step 2: Convert to fraction form
   77,708,109.69/107,236,636.16 = 42,425,913.69/x
3. Step 3: Cross multiply
   77,708,109.69x = 107,236,636.16 × 42,425,913.69
4. Step 4: Simplify right side
   77,708,109.69x = 4,549,612,269,917,963
5. Step 5: Solve for x
   x = 4,549,612,269,917,963/77,708,109.69
6. Step 6: Final answer
   x = 58,547,457.76